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2. OEM Replacement Seals by Brand

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    KSB 33mm Mechanical Seal — SU 033 (VGM-1433L)

    KSB 33mm Mechanical Seal — SU 033 (VGM-1433L)

    Item #SH-19730MM

    KSB 33mm Mechanical Seal — SU 033 (VGM-1433L)

    The Seal House KSB 33mm mechanical seal is a direct-fit replacement for the KSB SU 033 Special, cross-referenced to KSB 27544001 and equal to US Seal VGM-1433L. Type T-197, built to OEM-equivalent standards or higher.

    At a Glance

    • Shaft size: 33mm

    • KSB reference: SU 033 Special, 27544001

    • Equal to: US Seal VGM-1433L

    • Form: Mechanical seal only (O-rings sold separately)

    Application

    Fits

    KSB submersible pumps and Amamix submersible motor driven mixers running the 33mm shaft seal, including the Amamix C 3736/48 UDG.

    Built for submerged duty

    An Amamix runs continuously underwater in a basin, and the seal is the only thing between the wastewater and the motor. Grit, rag and long unattended run hours are the normal condition rather than the exception, so the faces have to hold up without attention between service intervals — and when they don’t, the failure is a motor, not a seal.

    Need Help Matching?

    Confirm your pump or mixer type and serial number before ordering, or send a photo of the nameplate and the old seal to info@sealhouseusa.com, or call or text 561-414-1046 — our seal specialists will match it. No purchase required.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

    Weight .75 lbs
    Dimensions 3 × 3 × 2.5 in
  • Liberty Pumps unitized shaft seals in 1/2, 5/8 and 3/4 inch — US Seal PS-4064, PS-4065 and PS-4066 for FL, LE, LEH and LSG series pumps

    Liberty Pumps Unitized Shaft Seal — PS-4064, PS-4065 & PS-4066

    Liberty Pumps Unitized Shaft Seal — PS-4064, PS-4065 & PS-4066

    Item #N/A

    Liberty Pumps Unitized Shaft Seals

    Direct-fit unitized shaft seals for Liberty Pumps, built to OEM-equivalent standards or higher. Unitized construction means the seal head and the mating ring arrive as one pre-assembled unit — there is no separate seat to press into the housing. Select your shaft size above.

    Which one do I need?

    • 1/2″ — PS-4064. Seal head OD 1.125″, operating height .344″, mating ring OD .950″. Replaces Liberty 50980A0

    • 5/8″ — PS-4065. Seal head OD 1.440″, operating height .760″, mating ring OD 1.110″. Replaces Liberty 5120000, the seal supplied in Liberty kit K001717

    • 3/4″ — PS-4066. Seal head OD 1.575″, operating height .437″, mating ring OD 1.334″. Replaces Liberty 5633000

    Fits

    5/8″ — PS-4065 / Liberty 5120000: Series FL50, FL60, FL70, FL100, LE70, LE100, LEH100. Models FL61A-B10, FL61A-B61, FL61A-2-B10, FL61A-2-B61, FL61M-B10, FL61M-B61, FL61M-2-B10, FL61M-2-B61, FL62A-B10, FL62A-B61, FL62A-B78

    3/4″ — PS-4066 / Liberty 5633000: Series LSG200, LSGX200, XLSGX200, XFL50, XFL70, XFL100, XFL150, XLE50, XLE100, XLE150, FL50, FL200, LE100, LEH100, LEH150, LEH200, PRG. Models LSG202A-B15, LSG202A-B27, LSG202A-B28, LSG202A-B29, LSG202A-B48, LSG202A-B52, LSG202ALC-B52

    1/2″ — PS-4064 / Liberty 50980A0 

    Applications

    Liberty pumps handle effluent, sewage, grinder and sump duty in residential and light commercial systems — basement and crawlspace dewatering, septic effluent transfer, grinder installations and packaged lift stations. The shaft seal is what ends the pump’s life when it goes: once it lets water past, the motor follows.

    Need Help Matching?

    Confirm your pump model before ordering. Not sure? Send a photo of the pump label and the old seal to info@sealhouseusa.com, or call or text 561-414-1046 — our seal specialists will match it. No purchase required.

    Weight .25 lbs
    Dimensions 1 × 1 × 1 in
  • Lowara 131 14mm mechanical seal, 0140.131.R.N.B, Goulds 10L36 equivalent, single seal Gianneschi T-13 mechanical seal, ceramic/carbon faces with Buna, Gianneschi T-13 mechanical seals, ceramic/carbon faces with Buna, shaft sizes 12mm to 32mm

    Lowara 131 Mechanical Seal — 14mm (0140.131.R.N.B)

    Lowara 131 Mechanical Seal — 14mm (0140.131.R.N.B)

    Item #LOW-131-14

    Lowara 131 Mechanical Seal — 14mm (0140.131.R.N.B)

    The Lowara 131 mechanical seal is a direct-fit 14mm shaft seal for Xylem Lowara pumps, referenced as OEM 0140.131.R.N.B. It is built to OEM-equivalent standards or higher and is a direct replacement for Lowara pumps using the 14mm shaft.

    This is the same 14mm seal we supply for the equivalent Goulds, Grundfos, and PLM pumps, listed here under its Lowara reference for easy matching.

    At a glance:

    • Shaft size: 14 mm

    • Manufacturer reference: Lowara 131

    • OEM reference: 0140.131.R.N.B

    • Also fits: Goulds 10L36, Grundfos, PLM 90 BG equivalents

    • Faces: Ceramic/Carbon

    • Elastomers: Buna (Nitrile)

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    Built for Xylem Lowara pumps using the 14mm shaft seal arrangement, and the equivalent Goulds, Grundfos, and PLM models. Matching from a worn seal? Confirm your pump model and shaft size first, or send a photo of the old seal and your pump nameplate to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

    Weight .25 lbs
    Dimensions 1.5 × 1.5 × 1.5 in
  • Pioneer Cornell Thompson T-2 mechanical seal, Tungsten Carbide

    Pioneer, Cornell & Thompson Mechanical Seal — 1-5/8″ T-2 (Tungsten or SiC/SiC)

    Pioneer, Cornell & Thompson Mechanical Seal — 1-5/8″ T-2 (Tungsten or SiC/SiC)

    Item #821VSC/VTS

    Pioneer, Cornell & Thompson Mechanical Seal — 1-5/8″ T-2 (Tungsten or SiC/SiC)

    This 1-5/8″ T-2 mechanical seal is a direct-fit replacement for Pioneer, Cornell, and Thompson pumps built around a 1.625″ shaft and T-2 arrangement (2.375 seat). Built to OEM-equivalent standards or higher, it’s available in two material builds — choose the one that fits your service.

    Cross Reference:

    • Thompson: PS-3772 — Q55-5162-1T2

    • Pioneer: PS-2739 — 30400193 (316SS)

    • Cornell: PS-3223 — A17064K-40 (316SS)

    Choose Your Material

    • Tungsten Carbide / Viton — the OEM-equivalent material these pumps are specified with from the factory. Our premium option.

    • Silicon Carbide / Silicon Carbide / Viton — a lower-cost alternative build for many standard applications.

    At a Glance

    • Shaft size: 1-5/8″ (1.625″)

    • Type:T-2 (2.375 seat)

    • Material options: Tungsten Carbide/Viton (OEM-equivalent, premium) or SiC/SiC/Viton (lower-cost alternative)

    • Fits brands: Pioneer, Cornell, Thompson

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    Material Options Explained 
    As specified from the factory, these pumps typically use a Tungsten Carbide seal — that’s our OEM-equivalent, premium option, matching the original spec. We also offer a Silicon Carbide/Silicon Carbide/Viton build at a lower price as a cost-effective alternative for many applications. Both are direct-fit; the Tungsten Carbide matches the OEM material, while the SiC/SiC option is the more economical choice.

    Applications

    Built for 1-5/8″ T-2 Pioneer, Cornell, and Thompson pumps. Matching from a worn seal or a parts list? Confirm your pump model and shaft size first, or send a photo of the old seal and your pump nameplate to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

    Weight .30 lbs
    Dimensions 2 × 2 × 2 in
  • Pioneer Cornell Thompson T-2 mechanical seal, Tungsten Carbide

    Pioneer, Cornell & Thompson Mechanical Seal — 2-1/2″ T-2 (Tungsten or SiC/SiC)

    Pioneer, Cornell & Thompson Mechanical Seal — 2-1/2″ T-2 (Tungsten or SiC/SiC)

    Item #835VSC/VTS

    Pioneer, Cornell & Thompson Mechanical Seal — 2.500″ T-2 (Tungsten or SiC/SiC)

    This 2.500″ T-2 mechanical seal is a direct-fit replacement for Pioneer, Cornell, and Thompson pumps built around a 2.500″ shaft and T-2 arrangement (3.375 seat). Built to OEM-equivalent standards or higher, it’s available in two material builds — choose the one that fits your service.

    Cross Reference:

    • Thompson: PS-3888 — Q55-2520-1T2

    • Pioneer: PS-2740 — 30400194, 730400172 (316SS)

    • Cornell: PS-22094 — A16421D-40 (316SS)

    Choose Your Material

    • Tungsten Carbide / Viton — the OEM-equivalent material these pumps are specified with from the factory. Our premium option.

    • Silicon Carbide / Silicon Carbide / Viton — a lower-cost alternative build for many standard applications.

    At a Glance

    • Shaft size: 2.500″ (2-1/2″)

    • Type: T-2 (3.375 seat)

    • Material options: Tungsten Carbide/Viton (OEM-equivalent, premium) or SiC/SiC/Viton (lower-cost alternative)

    • Fits brands: Pioneer, Cornell, Thompson

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    Material Options Explained 
    As specified from the factory, these pumps typically use a Tungsten Carbide seal — that’s our OEM-equivalent, premium option, matching the original spec. We also offer a Silicon Carbide/Silicon Carbide/Viton build at a lower price as a cost-effective alternative for many applications. Both are direct-fit; the Tungsten Carbide matches the OEM material, while the SiC/SiC option is the more economical choice.

    Applications

    Built for 2.500″ T-2 Pioneer, Cornell, and Thompson pumps. Matching from a worn seal or a parts list? Confirm your pump model and shaft size first, or send a photo of the old seal and your pump nameplate to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Explore our full line up of OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

    Weight .25 lbs
    Dimensions 3 × 3 × 3 in
  • PS-4349 mechanical seal, Bell & Gossett 1/2 inch, P86261, upgraded EPDM/SiC/SiC, 2100 series

    PS-4349 Mechanical Seal — Bell & Gossett 1/2″

    PS-4349 Mechanical Seal — Bell & Gossett 1/2″

    Item #BG-PS-4349

    PS-4349 Mechanical Seal — Bell & Gossett 1/2″

    The PS-4349 mechanical seal is a direct-fit 1/2″ shaft seal for Bell & Gossett 2100 series pumps, cross-referenced to B&G P86261. It is built to OEM-equivalent standards or higher, and we supply it with an upgraded Silicon Carbide/Silicon Carbide face combination — a step up from the standard carbon version — for longer service life.

    Upgraded Material 
    The OEM seal (186046LF / 186047LF) uses an EPDM/Carbon/Silicon Carbide build. We supply the PS-4349 with an upgraded EPDM/Silicon Carbide/Silicon Carbide combination — both faces in hard silicon carbide — for better wear resistance and longer service life in demanding duty.

    At a Glance:

    • Reference: PS-4349 / B&G P86261

    • Series: Bell & Gossett 2100

    • Shaft size: 1/2″

    • Working length: 0.591″

    • Cup seat: 0.938″ × 0.294″

    • Faces / elastomers: EPDM / SiC / SiC (upgraded)

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    Applications 
    Built for Bell & Gossett 2100 series pumps running the 1/2″ shaft seal. Matching from a worn seal? Confirm your shaft size and cup seat dimensions first, or send a photo of the old seal and your pump nameplate to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Explore our full line up of  Bell & Gossett Product and OEM seals 

    Looking for more? Shop Pump Repair Kits, Shaft Seals and Pre-Cut Gaskets

    Have questions? Call us anytime- we’re here to help 

    Weight .25 lbs
    Dimensions 1 × 1 × 1 in
  • Smith & Loveless 1-7/8" Mechanical Seal

    Smith & Loveless 1-7/8″ Mechanical Seal — Single or Double

    Smith & Loveless 1-7/8″ Mechanical Seal — Single or Double

    Item #N/A

    Smith & Loveless 1-7/8″ Mechanical Seal — CRO & N-11 (Single or Double)

    The Smith & Loveless 1-7/8″ mechanical seal is a direct-fit replacement seal for Smith & Loveless pumps running a 1-7/8″ shaft — choose your seal style and configuration from the dropdown and you’ll get the right seal for your pump. Each is built to OEM-equivalent standards or higher for the same fit and reliability as the original.

    We offer this seal in two styles, each available single or double:

    • CRO style — the OEM-style original Durametallic CRO design.

    • N-11 style — a component seal design (Type 21 / Type C head) with a Carbon/SiC face and L-shaped O-ring seat.

    At a glance:

    • Shaft size: 1-7/8″

    • Styles: CRO (OEM Durametallic) or N-11 (component)

    • Configuration: Single or Double

    • Faces: SiC/Carbon (CRO) · Carbon/SiC (N-11)

    • Elastomers: Viton (FKM)

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    What’s Included:

    CRO Style (OEM equivalent to durametallic): A complete OEM-style CRO mechanical seal — rotary and stationary faces with elastomers.

    • Single: one seal set

    • Double: two seal sets

    N-11 Style (Component): A complete N-11 component mechanical seal — Carbon/SiC faces.

    • Single: one seal set

    • Double: two seal sets

    How to Order:

    Select your style and configuration above — the price and cross-reference for that option will update. Not sure which you need, or matching from a worn seal? Send your pump model and a photo of the old seal to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Smith & Loveless 1-7/8″ Seals — Style Reference
    Find your style and configuration below, then select it from the dropdown above to order. Need help matching? Call or text 561-414-1046.
    Style & Configuration Cross-Reference Notes
    CRO Style — Single H87A28 OEM equivalent to durametallic CRO design; SiC/Carbon faces, Viton
    CRO Style — Double PS-1105 · H60A119 · 11-60-A-119 OEM equivalent to durametallic CRO design, double; SiC/Carbon faces, Viton
    N-11 Style — Single VG-3315 (now 3315C) Component seal, Type N-11 (Type 21 / C); Carbon/SiC, L-shaped O-ring seat
    N-11 Style — Double VG-1105 Component seal, Type N-11 (Type 21 / C), double; Carbon/SiC, L-shaped O-ring seat
    Not sure which seal you need? Call or text 561-414-1046 — our seal specialists will match it. No purchase required.
    Weight N/A
    Dimensions N/A
  • Smith & Loveless 2-1/8" Mechanical Seal — N-11 (Single or Double)

    Smith & Loveless 2-1/8″ Mechanical Seal — Single or Double

    Smith & Loveless 2-1/8″ Mechanical Seal — Single or Double

    Item #N/A

    Smith & Loveless 2-1/8″ Mechanical Seal — N-11 (Single or Double)

    The Smith & Loveless 2-1/8″ mechanical seal is a direct-fit replacement seal for Smith & Loveless pumps running a 2-1/8″ shaft — choose single or double from the dropdown and you’ll get the right seal for your pump. Built to OEM-equivalent standards or higher for the same fit and reliability as the original.

    This size is offered in our N-11 component style — a crimped-head Type 21 / Type C design with a Carbon/SiC face and cup seat. It is the equivalent of U.S. Seal #3316 (VG-3316, also referenced as 4C2D and H87A97) for the single, and VG-1107 for the double. Note: this is not an OEM-style CRO seal; it’s our N-11 component replacement.

    At a glance:

    • Shaft size: 2-1/8″

    • Style: N-11 component (crimped-head Type 21 / C, cup seat)

    • Configuration: Single or Double

    • Faces: Carbon/Silicon

    • Elastomers: Viton (FKM)

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    Single vs Double — Which Do I Need?

    The difference is how many sealing points the pump uses. A single seal has one set of sealing faces — the standard setup on many Smith & Loveless pumps. A double seal has two sets of faces for a second barrier in tougher or continuous-duty service. The safest way to choose is to match what your pump came with: count the seals on the old unit, or check your parts list. Not sure? Send a photo to 561-414-1046 and we’ll confirm.

    What’s Included

    N-11 Style (Component) A complete N-11 component mechanical seal — Carbon/SiC faces with cup seat.

    • Single: one seal set

    • Double: two seal sets

    Please note: this is the mechanical seal only. O-rings, shaft sleeves, and pump-side hardware are not included.

    How to Order

    Select single or double above — the price and cross-reference will update. Not sure which you need, or matching from a worn seal? Send your pump model and a photo of the old seal to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Smith & Loveless 2-1/8″ Seals — Style Reference
    Find your configuration below, then select it from the dropdown above to order. Need help matching? Call or text 561-414-1046.
    Style & Configuration Cross-Reference Notes
    N-11 Style — Single VG-3316 · U.S. Seal 3316 · 4C2D · H87A97 Crimped-head T-21, cup seat; not an OEM CRO
    N-11 Style — Double VG-1107 Double T-N11; Nitrile/Carbon/SiC, 3.187? cup seats
    Not sure which seal you need? Call or text 561-414-1046 — our seal specialists will match it. No purchase required.
    Weight N/A
    Dimensions N/A
  • Smith & Loveless 3" Mechanical Seal — Single or Double

    Smith & Loveless 3″ Mechanical Seal — Single or Double

    Smith & Loveless 3″ Mechanical Seal — Single or Double

    Item #N/A

    Smith & Loveless 3″ Mechanical Seal — Single or Double

    The Smith & Loveless 3″ mechanical seal is a direct-fit replacement seal for Smith & Loveless pumps running a 3″ shaft — choose single or double from the dropdown and you’ll get the right seal for your pump. Built to OEM-equivalent standards or higher for the same fit and reliability as the original.

    This size is offered in our CRO style — the OEM-style equivalent to Durametallic CRO design. The single replaces H87A534; the double replaces H60A121 (VG-7532).

    At a glance:

    • Shaft size: 3″

    • Style: CRO (OEM equivalent to Durametallic)

    • Configuration: Single or Double

    • Faces: Ceramic/Carbon

    • Elastomers: Viton (FKM)

    • Form: Seal assembly only (O-rings/gaskets sold separately)

    What’s Included:

    CRO Style (OEM equivalent to Durametallic) A complete OEM-style CRO mechanical seal — rotary and stationary faces with elastomers.

    • Single: one seal set

    • Double: two seal sets

    Please note: this is the mechanical seal only. O-rings, shaft sleeves, and pump-side hardware are not included. (The double uses the gland plate #251 O-ring, which is not supplied.)

    Single vs Double — Which Do I Need?

    The difference is how many sealing points the pump uses. A single seal has one set of sealing faces — the standard setup on many Smith & Loveless pumps. A double seal has two sets of faces for a second barrier in tougher or continuous-duty service. The safest way to choose is to match what your pump came with: count the seals on the old unit, or check your parts list. Not sure? Send a photo to 561-414-1046 and we’ll confirm.

    How to Order

    Select single or double above — the price and cross-reference will update. Not sure which you need, or matching from a worn seal? Send your pump model and a photo of the old seal to info@sealhouseusa.com, or call/text 561-414-1046. No purchase required — our seal specialists will match it.

    Smith & Loveless 3″ Seals — Style Reference
    Find your configuration below, then select it from the dropdown above to order. Need help matching? Call or text 561-414-1046.
    Style & Configuration Cross-Reference Notes
    CRO Style — Single H87A534 OEM equivalent to Durametallic CRO design, single
    CRO Style — Double H60A121 · VG-7532 OEM equivalent to Durametallic CRO, double; Buna/Ceramic/Carbon. Uses gland plate #251 O-ring (not supplied)
    Not sure which seal you need? Call or text 561-414-1046 — our seal specialists will match it. No purchase required.
    Weight N/A
    Dimensions N/A