Mechanical Seals - Page 2 of 12

185c Mechanical Seal (PS-185)1-1/4″

Item #N/A

Single Spring Mechanical Seal 185C — 1-1/4″| PS-185

185c single spring mechanical seal, PS-185 / 185 equivalent. Fits 1-1/4″ shaft with 1.875″× 0.437″ seat and Type N-11 (Type C/21) rotary head.

Typical applications: Centrifugal pumps, mixers, and other rotating equipment.

Key specs: Shaft size: 1-1/4″ single spring seal • Seat: 1.875″ x 0.437″ cup • Rotary OD: 1.787″ • Working length: 1.062″

Design & construction:
Crimped rotary head (Type N-11)—similar to industry Type C / 21; can also replace Type D / 2 with a simple spring change (in most cases). Electro-polished 304 stainless steel metal parts. Elastomeric bellows. Non-directional (independent of shaft rotation).

Same seal, same dimensions — only the seal faces and rubber parts change. Most clean-water pumps take the Standard seal. Step up to an Upgrade if your pump runs hot, handles chemicals, or pumps gritty water.

Seal Material	Max Temp	Choose This If
3 seal materials available — choose yours from the drop-down menu above.
Standard – Carbon/Ceramic/NitrileCAR/CER/NIT	200°F	Clean water at neutral pH — HVAC, water transfer, pool and general-service pumps. This is the standard build.
Upgrade – Carbon/Ceramic/VitonCAR/CER/VIT	450°F	Your pump runs hot, or handles glycol, oils, fuels, bleach or other chemicals that break down standard Nitrile.
Upgrade – Silicon Carbide/VitonSIC/SIC/VIT	450°F	Gritty or dirty water, wastewater and slurry, or any pump where seals keep wearing out early. Hardest faces we offer.

Still not sure? Text a photo of your pump nameplate to 561-414-1046 and tell us what the pump runs — we’ll tell you which seal material to order. No purchase required.

Rebuilding a Berkeley TP or ZP series? Check out our Berkeley kits and save the sourcing.

This S32014 seal 1-1/4″ (TPMS / TPLS / TPHS / ZP) is included in the Berkeley Pump Repair Kits — seal, sleeve, and volute gasket matched to the same pump service, shipped together.

Have questions? Check out our Single Spring Seal Guide or call us anytime—we’re here to help.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Gaskets.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.35 lbs
Dimensions	2.25 × 2.25 × 1.75 in

188c Mechanical Seal (PS-188)7/8″

Item #N/A

Single Spring Mechanical Seal 188c | PS-188

188c single spring mechanical seal, PS-188 / 188 equivalent. Fits 7/8″ shaft with 1.500″×.405″ seat and Type N-22 rotary head.

Shaft Size: 7/8″ Seat Cup: 1.500″ x o.405″ Rotary OD: 1.315″ Working Length: 1.437″

Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

Same seal, same dimensions — only the seal faces and rubber parts change. Most clean-water pumps take the Standard seal. Step up to an Upgrade if your pump runs hot, handles chemicals, or pumps gritty water.

Seal Material	Max Temp	Choose This If
3 seal materials available — choose yours from the drop-down menu above.
Standard – Carbon/Ceramic/NitrileCAR/CER/NIT	200°F	Clean water at neutral pH — HVAC, water transfer, pool and general-service pumps. This is the standard build.
Upgrade – Carbon/Ceramic/VitonCAR/CER/VIT	450°F	Your pump runs hot, or handles glycol, oils, fuels, bleach or other chemicals that break down standard Nitrile.
Upgrade – Silicon Carbide/VitonSIC/SIC/VIT	450°F	Gritty or dirty water, wastewater and slurry, or any pump where seals keep wearing out early. Hardest faces we offer.

Still not sure? Text a photo of your pump nameplate to 561-414-1046 and tell us what the pump runs — we’ll tell you which seal material to order. No purchase required.

Interchange / replacements:

Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9
Can replace Type E and Type 1 in many applications (confirm dimensions)

Design & construction:

Electro-polished 304 stainless steel metal parts
Elastomeric bellows for stable sealing and easy installation
Independent of shaft rotation

Have questions? Check out our Single Spring Seal Guide or call us anytime—we’re here to help.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Gaskets.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.35 lbs
Dimensions	2 × 2 × 2 in

ps-100 , ps-200 , ps-201 mechanical seal

200c Mechanical Seal (PS-200) — 5/8″Hayward Max-Flo II & Pentair SuperFlo Pool Pumps

Mechanical Seal 200 — Type 166 (5/8″) | PS-200

Equal to industry standard 200 / PS-200.
Direct-fit Type 166 single-spring seal for pool/spa and small-pump applications—built with molded carbon / ceramic faces and Buna-N elastomers for dependable everyday service.

At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Carbon/Ceramic faces • Buna-N elastomers

Fits: Hayward Max-Flo II® and Max-Flo VS (SPX1250XZ2), Pentair / Pac-Fab Challenger®, Dynamo®, Dynatron® and Pinnacle®, Sta-Rite Dura-Glas® and Max-E-Glas® Series PE, PEA, P2R and P2RA, plus Speck, Waterway, Jacuzzi, Astral Pool and Doughboy pool and spa pumps. The original Hayward Max-Flo (SP2800X) and Dura-Glas II / Max-E-Glas II take the PS-201; pre-1998 Dura-Glas takes the PS-100.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-200 for a 5/8″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
200c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
200cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
516	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3867	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
200cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Have questions? Check out our Pool/Spa Small Pump Guide or call us anytime—we’re here to help.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in

200CV Mechanical Seal (PS-200V-CMS) — 5/8″Hayward Max-Flo II & Pentair SuperFlo Pool Pumps

Mechanical Seal 200CV — Type 166 / T-16 (5/8″) | PS-200V-CMS

Equal to industry standard 200CV / PS-200V-CMS.
Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—built with molded carbon/ceramic faces and Viton/FKM elastomers for added chemical and temperature resistance.

At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Molded carbon/ceramic faces • Viton/FKM elastomers

Fits: Hayward Max-Flo II® and Max-Flo VS (SPX1250XZ2), Pentair SuperFlo® and SuperFlo VS (354545S), Pentair / Pac-Fab Challenger®, Dynamo®, Dynatron® and Pinnacle®, Sta-Rite Dura-Glas® and Max-E-Glas® Series PE, PEA, P2R and P2RA, plus Speck, Waterway, Jacuzzi, Astral Pool and Doughboy pool and spa pumps. Pentair SuperFlo VST, the original Hayward Max-Flo (SP2800X) and Dura-Glas II / Max-E-Glas II take the PS-201; pre-1998 Dura-Glas takes the PS-100.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-200 for a 5/8″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
200c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
200cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
516	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3867	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
200cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

Have questions? Check out our Pool/Spa Small Pump Guide or call us anytime—we’re here to help.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in

ps-100 ps-200 ps-201 pump seal sic/sic/vit

200CVSS Mechanical Seal (PS-200V-SC-SC) — 5/8″Hayward Max-Flo II & Pentair SuperFlo Pool Pumps

Mechanical Seal 200CVSS — Type 166 / T-16 (5/8″) | PS-200v-SC-SC

Equal to industry standard 200CVSS / PS-200v-SC-SC.
Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—engineered with Silicon Carbide faces and Viton/FKM elastomers for added chemical and temperature resistance.

At-a-glance specs: 5/8″ shaft • 1.25″ × 0.406″ cup seat • Silicon Carbide / Silicon Carbide faces • Viton elastomers

Fits: Hayward Max-Flo II® and Max-Flo VS (SPX1250XZ2), Pentair SuperFlo® and SuperFlo VS (354545S), Pentair / Pac-Fab Challenger®, Dynamo®, Dynatron® and Pinnacle®, Sta-Rite Dura-Glas® and Max-E-Glas® Series PE, PEA, P2R and P2RA, plus Speck, Waterway, Jacuzzi, Astral Pool and Doughboy pool and spa pumps. Pentair SuperFlo VST, the original Hayward Max-Flo (SP2800X) and Dura-Glas II / Max-E-Glas II take the PS-201; pre-1998 Dura-Glas takes the PS-100.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-200 for a 5/8″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
200c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
200cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
516	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3867	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
200cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Pre-Cut Gaskets.

Have questions? Check out our Pool/Spa Small Pump Guide or call us anytime—we’re here to help.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in

2016c Mechanical Seal (PS-2016)5/8″

Item #N/A

Single Spring Mechanical Seal 2016c | PS-2016

2016c single spring mechanical seal, PS-2016 / 2016 equivalent. Fits 5/8″ shaft with 1.250″×.405″ seat and Type N-22 rotary head.

Shaft size: 5/8″ Seat: 1.250″ x 0.405″ cup Rotary OD: 1.063″ Working Length: 1.375″

Crimped rotary head type N-22. Utilized in centrifugal pumps, mixers, rotating equipment, and further apparatus.

Same seal, same dimensions — only the seal faces and rubber parts change. Most clean-water pumps take the Standard seal. Step up to an Upgrade if your pump runs hot, handles chemicals, or pumps gritty water.

Seal Material	Max Temp	Choose This If
3 seal materials available — choose yours from the drop-down menu above.
Standard – Carbon/Ceramic/NitrileCAR/CER/NIT	200°F	Clean water at neutral pH — HVAC, water transfer, pool and general-service pumps. This is the standard build.
Upgrade – Carbon/Ceramic/VitonCAR/CER/VIT	450°F	Your pump runs hot, or handles glycol, oils, fuels, bleach or other chemicals that break down standard Nitrile.
Upgrade – Silicon Carbide/VitonSIC/SIC/VIT	450°F	Gritty or dirty water, wastewater and slurry, or any pump where seals keep wearing out early. Hardest faces we offer.

Still not sure? Text a photo of your pump nameplate to 561-414-1046 and tell us what the pump runs — we’ll tell you which seal material to order. No purchase required.

Interchange / replacements:

Equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9
Can replace Type E and Type 1 in many applications (confirm dimensions)

Design & construction:

Electro-polished 304 stainless steel metal parts
Elastomeric bellows for stable sealing and easy installation
Independent of shaft rotation

Have questions? Check out our Single Spring Seal Guide or call us anytime—we’re here to help.

Explore our full lineup of Single Spring Seals—PS replacements, pool/spa seals, and our SPS line.

Looking for more? Shop Pump Repair Kits, Parts & Accessories, and Gaskets.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.35 lbs
Dimensions	1.75 × 1.75 × 2 in

201c Mechanical Seal (PS-201) — 3/4″Hayward Super Pump & Pentair IntelliFloXF Pool Pumps

Mechanical Seal 201c — Type 166 (3/4″) | PS-201

Equal to industry standard 201 / PS-201. Direct-fit replacement for PS-201 single-spring seals in pool/spa and small-pump applications. Engineered with molded carbon/ceramic faces and Buna-N elastomers.

At-a-glance specs: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Type 166 • Molded carbon/ceramic faces • Buna-N elastomers

Fits: Hayward Super Pump®, Super Pump II, Super Pump VS and the original Max-Flo (SPX1600Z2), Pentair IntelliFloXF® and SuperFlo® VST (17351-0101S), Sta-Rite Dura-Glas® II, Max-E-Glas™ II, Max-E-Pro® and Dyna-Pro®, plus Pac-Fab, American Products, Purex, Swimquip and Jacuzzi pool and spa pumps. The standard Pentair IntelliFlo takes the PS-1000; Pentair SuperFlo / SuperFlo VS and Hayward Max-Flo II take the PS-200.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-201 for a 3/4″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
201c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
201cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
851	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3868	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
201cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Rebuilding a Hayward Super Pump or Super II?Get this 201c seal in a complete kit with both gaskets — choose Standard – Carbon/Ceramic/Nitrile (201c) from the kit drop-down.

Doing the job yourself? Read How to Replace a Mechanical Pump Seal.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1 × 1 × 1.25 in

201cv Mechanical Seal (PS-201V-CMS) — 3/4″Hayward Super Pump & Pentair IntelliFloXF Pool Pumps

Mechanical Seal 201cv — Type 166 / T-16 (3/4″) | PS-201V-CMS

Equal to industry standard 201cv / PS-201V-CMS.
Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—built with molded carbon/ceramic faces and Viton elastomers for added chemical and temperature resistance.

At-a-glance specs: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Molded carbon/ceramic faces • Viton/FKM elastomers

Fits: Hayward Super Pump®, Super Pump II, Super Pump VS and the original Max-Flo (SPX1600Z2), Pentair IntelliFloXF® and SuperFlo® VST (17351-0101S), Sta-Rite Dura-Glas® II, Max-E-Glas™ II, Max-E-Pro® and Dyna-Pro®, plus Pac-Fab, American Products, Purex, Swimquip and Jacuzzi pool and spa pumps. The standard Pentair IntelliFlo takes the PS-1000; Pentair SuperFlo / SuperFlo VS and Hayward Max-Flo II take the PS-200.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-201 for a 3/4″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
201c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
201cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
851	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3868	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
201cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Rebuilding a Hayward Super Pump or Super II?Get this 201cv seal in a complete kit with both gaskets — choose Upgrade – Carbon/Ceramic/Viton (201cv) from the kit drop-down.

Doing the job yourself? Read How to Replace a Mechanical Pump Seal.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in

201cvss Mechanical Seal (PS-201V-SC-SC) — 3/4″Hayward Super Pump & Pentair IntelliFloXF Pool Pumps

Mechanical Seal 201CVSS — Type 166 / T-16 (3/4″) | PS-201V-SC-SC

Equal to industry standard 201CVSS / PS-201V-SC-SC.
Direct-fit Type 166 / T-16 single-spring seal for pool/spa and small-pump applications—engineered with hard faces and chemical-resistant elastomers for longer service life.

At-a-glance spec: 3/4″ shaft • 1.375″ × 0.406″ cup seat • Silicon Carbide / Silicon Carbide faces • Viton/FKM elastomers

Fits: Hayward Super Pump®, Super Pump II, Super Pump VS and the original Max-Flo (SPX1600Z2), Pentair IntelliFloXF® and SuperFlo® VST (17351-0101S), Sta-Rite Dura-Glas® II, Max-E-Glas™ II, Max-E-Pro® and Dyna-Pro®, plus Pac-Fab, American Products, Purex, Swimquip and Jacuzzi pool and spa pumps. The standard Pentair IntelliFlo takes the PS-1000; Pentair SuperFlo / SuperFlo VS and Hayward Max-Flo II take the PS-200.

Same seal, same size, same fit — what changes is the material and how it’s built. All five seals below are the PS-201 for a 3/4″ shaft, and all five fit the same pumps. They differ in two ways. The build: a molded carbon face or a premium carbon face machined from solid stock. The materials: a ceramic or silicon carbide seat, and Nitrile or Viton rubber. Pick the one that suits your water.

Seal	Material	Best For This Water
201c	Molded carbon face, ceramic seat, Nitrile rubber	Normal chlorine, normal temperature, clear water. The standard build for a home pool or spa.
201cv	Molded carbon face, ceramic seat, Viton rubber	Saltwater or higher chlorine, and warmer water. Viton holds up where standard Nitrile hardens and cracks.
851	Machined premium carbon face, ceramic seat, Nitrile rubber	Saltwater pools with a chlorine generator, commercial pools, or any pump that runs most of the day.
3868	Machined premium carbon face, ceramic seat, Viton rubber	High chlorine and hot water — heated spas, therapy pools, heavy commercial duty.
201cvss	Silicon carbide face and seat, Viton rubber	Sandy, dusty or gritty water, or any pump where seals keep failing early. The hardest faces we offer.

Rebuilding a Hayward Super Pump or Super II?Get this 201cvss seal in a complete kit with both gaskets — choose Heavy Duty – Silicon Carbide/Viton (201cvss) from the kit drop-down.

Doing the job yourself? Read How to Replace a Mechanical Pump Seal.

Please click “specifications” below for OEM numbers and Pump Nameplate Data

Weight	.25 lbs
Dimensions	1.5 × 1.5 × 1.25 in