1679c Mechanical Seal (PS-1679)2-1/4″

Item #N/A

The 1679c single spring mechanical seal is Seal House equivalent to the PS-1679 / 1679 — built to OEM-equivalent standards or higher. A Type C crimped-head seal (John Crane Type 21) for a 2-1/4 in. shaft, used in ABS, Crane-Deming, Goulds, Hydromatic, Weir and Yeomans pumps.

Specifications

Shaft Size2-1/4 in.57.15 mm

Head TypeType CJohn Crane 21 · N-11

Head OD3.125 in.79.38 mm

Operating Height1.688 in.working length

Seat TypeCup mount

Seat OD3.125 in.

Seat Thickness0.562 in.

Metal Parts304 stainlesselectro-polished

Single spring · elastomeric bellows · non-directional, runs either rotation · carbon or silicon carbide faces, Nitrile or Viton elastomersChoose Your Seal Material3 seal materials available. Same seal, same dimensions — only the faces and rubber parts change. Find what your pump runs, then choose that option from the drop-down menu above.

Seal Material	What’s in it	Choose this if
Standard – Carbon/Ceramic/NitrileCAR/CER/NIT · BCFJF	Carbon face, ceramic seat, Nitrile rubberMax 225°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 · VCFJF	Carbon face, ceramic seat, Viton rubberMax 400°F	Your pump runs hot, or handles glycol, oils, fuels, bleach or other chemicals that break down standard Nitrile.
Top gradeHeavy Duty – Silicon Carbide/VitonSIC/SIC/VIT · VLFLF	Silicon carbide face and seat, Viton rubberMax 400°F	Gritty or dirty water, wastewater and slurry, or any pump where seals keep wearing out early. The hardest faces we offer.

Cross ReferencesFind your pump brand, then match the number on your old seal or nameplate.

Pump / Motor Brand	OEM Part No.	Nameplate & Notes
ABS USA (Sulzer)	11116015
Baldor-Reliance (ABB Group)	64262-12E	Motor frame 250
Crane-Deming	0030892	Division of Crane Pumps & Systems
Crane Pumps & Systems	0030892
Goulds Pumps	9152111001
Weir Specialty Pumps	52600
Yeomans Chicago (Grundfos)	C3-2-61
Hydromatic Pump Company	080730031	Viton Order the Viton option

Seal House USA provides aftermarket replacement parts. The 1679c is equal to — not manufactured by — the listed OEMs or US Seal Mfg. Any OEM and PS names or numbers are used strictly for cross-reference. We are an independent supplier.Other Sizes in the N LineCheck the head type as well as the shaft — a Type E head is a different seal design.

Seal	Shaft	Head	Head OD	Op. Height
267c	2 in.	Type C	2.875	1.500
537c	2-1/8 in.	Type E	2.812	2.375
844c	2-1/8 in.	Type C	3.000	1.687
1679c	2-1/4 in.	Type C	3.125	1.688
323c	2-1/4 in.	Type E	2.938	2.375
268c	2-3/8 in.	Type C	3.250	1.812
2120c	2-1/2 in.	Type C	3.515	1.813

See all N Line single spring seals · How to Replace a Mechanical Pump Seal · Single Spring Seal Guide

Other part numbers & search terms

Part number: PS-1679 = PS1679 = PS 1679 = 1679 = 1679c = 1679 C = 1679-c
Size: 2-1/4 mechanical seal = 2.25 mechanical seal = 57.15 mm seal · 3.125 x 0.562 seat = 3-1/8 x 9/16 seat · 1.688 working length = 1.688 operating height
Head type: Type C seal = John Crane Type 21 = JC 21 = C21 seal · N-11 seal = N11 seal · Type D / John Crane 2 replacement (with spring change)
Materials: BCFJF carbon ceramic nitrile · VCFJF carbon ceramic Viton / FKM · VLFLF SiC / SiC Viton / FKM
Fit note: the N-11 head has a reduced OD for ANSI seal chambers and fits straight box bores where many seals cannot. Max shaft size for this design is 2.25 in.

Not sure which seal or material you need?Call or text a photo of your pump nameplate — no purchase required.561-414-1046Engineered to fit. Built to last.

Weight	.9 lbs
Dimensions	3.25 × 3.25 × 2.5 in

177c Mechanical Seal (PS-177)1-3/8″

Item #N/A

Single Spring Mechanical Seal 177C — 1-3/8″ | PS-177

177c single spring mechanical seal, PS-177 / 177 equivalent. Fits 1-3/8″ shaft with 2.000″×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: 1-3/8″ single spring seal • Seat: 2.000″ x 0.437″ cup • Rotary OD: 1.941″ • Working length: 1.125″

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.

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

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

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

204c Mechanical Seal (PS-204)1-1/8″

Item #N/A

Single Spring Mechanical Seal 204c | PS-204

204c single spring mechanical seal, PS-204 / 204 equivalent. Fits 1-1/8″ shaft with 1.750″×.437″ seat and Type N-22 rotary head.

Shaft size: 1-1/8″ Seat: 1.750″ x .437″ cup, Rotary OD: 1.650″, Working Length: 1.687″

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	2.25 × 2.25 × 2.25 in

205c Mechanical Seal (PS-205)1-3/4″

Item #N/A

Single Spring Mechanical Seal 205c | PS-205

205c single spring mechanical seal, PS-205 / 205 equivalent. Fits 1-3/4″ shaft with 2.500″×.500″ seat and Type N-22 rotary head.

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

Key specs: Shaft size: 1-3/4″ single spring seal • Seat: 2.500″ x .500″ • Rotary OD: 2.402″ • Working length: 2.000″

Design & construction:
Crimped rotary head (Type N-22)—equivalent to Pac-Seal T-21 (long working length) and Burgmann MG9, can replace seal type E & 1 seal heads. 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.

Both PS replacements? Which should I choose? Check out more on our Seal House Seal Guide

Seal Model	Product Line	Replaces	Features & Focus
205C	N Line	PS-514	Easy installation & broad compatibility
SPS-205	SPS Line	PS-514	Premium build for longevity & like for like replacement.

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

Weight	.9 lbs
Dimensions	2.75 × 2.75 × 2.75 in

2120C Mechanical Seal (PS-2120)2-1/2″

Single Spring Mechanical Seal 2120C — 2-1/2″ | PS-2120 Equivalent

2120c single spring mechanical seal, PS-2120 / 2120 equivalent. Fits 2-1/2″ shaft with 3.375″×0.562″ seat and Type N-11 (Type C/21) rotary head.

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

Key specs: Shaft size: 2-1/2″ single spring seal • Seat: 3.375″ x 0.562″ • Rotary OD: 3.209″ • Working length: 1.812″

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).

Material: CAR/CER/NIT — Carbon vs. Ceramic faces, Nitrile elastomers

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	.9 lbs
Dimensions	3.5 × 3.5 × 2.5 in

235c Mechanical Seal (PS-235)1″

Item #N/A

Single Spring Mechanical Seal 235C — 1″ | PS-235

235c single spring mechanical seal, PS-235 / 235 equivalent. Fits 1″ shaft with 1.625″×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″ single spring seal • Seat: 1.625″ x 0.437″ cup • Rotary OD: 1.547″ • Working length: 1.ooo”

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.

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 × 1.75 in