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2. OEM Replacement Seals by Brand

  • PS-4490 PS-3804 mechanical seal replacement, buy now

    Taco 70mm Mechanical Seal (2100K) – 70mm

    Taco 70mm Mechanical Seal (2100K) – 70mm

    Taco 70 mm Mechanical Seal — 2100K

    Taco 70mm mechanical seal replacement (2100K style) for Taco centrifugal/hydronic pumps. Built with SiC/SiC faces and Viton (FKM) elastomers for temperature and chemical resistance. This is a 70 mm mechanical seal built to the 2100K style, commonly used in HVAC and hydronic circulation service (hot/chilled water systems) where durability and temperature resistance are important.

    Material build

    • Faces: SiC / SiC

    • Elastomers: Viton 

    Cross-references

    • Taco: 955-1846RP, 955-1841RP (SiC/Viton material code)

    • Other refs: TS100801/70/G, TC100813

    Best for

    • HVAC systems, hot/chilled water circulation, and general hydronic service where durability and temperature resistance are critical.

    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.

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    Weight 2 lbs
    Dimensions 4.5 × 4.5 × 3 in
  • PS-4490 PS-3804 mechanical seal replacement, buy now

    Taco GT350 Mechanical Seal (80mm Shaft) — Split-Case Pump Replacement

    Taco GT350 Mechanical Seal (80mm Shaft) — Split-Case Pump Replacement

    Taco GT350 Mechanical Seal (80mm Shaft) — Split-Case Pump Replacement

    Direct-fit aftermarket replacement mechanical seal designed for Taco GT350 split-case pumps. This seal is used to provide reliable shaft sealing and help prevent leaks during normal pump operation in hydronic heating/cooling, hot water, and chilled water circulation applications.

    Key specifications

    • Pump type: Taco GT350 split-case pump configuration

    • Shaft size: 80mm

    • Quantity required: Two (2) mechanical seals per pump

    Common applications

    • Hydronic heating and cooling systems

    • Chilled water and hot water circulation

    • Commercial HVAC pump maintenance and repair

    Fitment note: Match by pump model (GT350) and shaft size (80mm). If your pump’s nameplate lists a longer model (example: GT35024) or you have an OEM kit/part number from a manual or invoice, use the specification section below to confirm compatibility. Call or text us anytime to confirm right part.

    Explore full line-up of OEM seals 

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    Weight 2 lbs
    Dimensions 4.5 × 4.5 × 3 in
  • Ebara 260A Tsurumi 025-290-19 14mm double mechanical seal, SiC/SiC faces and Viton elastomers, upper and lower seal set

    Tsurumi 14mm Double Mechanical Seal — 025-290-19

    Tsurumi 14mm Double Mechanical Seal — 025-290-19

    Item #025-290-19

    Tsurumi 14 mm Double Mechanical Seal — 025-290-19 (14×30, Upper + Lower)

    The Tsurumi 025-290-19 is a direct-fit 14mm double mechanical seal (upper + lower) for small Tsurumi submersible pumps running a 14mm shaft and 30mm seat. Equivalent to VGM-2971 and cross-referenced as W-14HL / 025-290-19, it is built to OEM-equivalent standards or higher for the same fit and longevity as the original with Silicon Carbide faces (SiC/SiC) on both the upper and lower seals and Viton (FKM) elastomers, chosen for long service life in the abrasive, debris-heavy conditions submersible pumps run in.

    At a glance:

    • Shaft size: 14 mm

    • Seat size: 30 mm

    • Configuration: Double seal (upper + lower)

    • Faces: SiC/SiC (upper & lower)

    • Elastomers: Viton (FKM)

    • Manufacturer reference: Tsurumi 025-290-19

    • Applications: Designed for small Tsurumi submersible pumps using the 14×30 double-seal arrangement, including the HS2.4S, plus compatible Aquascape pond and fountain pumps built around the same 14mm shaft and 30mm seat.

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

    Compatibility / Cross-reference:

    • Ebara: 260A

    • Tsurumi: 025-00005, 025-29110; model HS2.4S

    • Aquascape: applications using 14×30 double seals

    • Equivalent to: VGM-2971

    • Cross-ref: W-14HL / 025-290-19 (also commonly referenced as U.S. Seal VGMW-14HL)

    Explore our full line up of OEM seals 

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    Weight .25 lbs
    Dimensions 1.75 × 1.75 × 1.75 in
  • Tsurumi 20mm double mechanical seal replacement Tsurumi 025-001-00 mechanical seal H-25T 25mm Ebara 260B 25mm mechanical seal

    Tsurumi 20MM Double Mechanical Seal

    Tsurumi 20MM Double Mechanical Seal

    Tsurumi 20mm Double Mechanical Seal (Upper + Lower)

    Direct-fit 20mm double mechanical seal replacement for Tsurumi submersible pumps that use a 20 mm shaft and a two-stage (upper + lower) seal set. This seal is built with hard silicon carbide faces on both stages (SiC/SiC – SiC/SiC) and Viton (FKM) elastomers for long service life, higher temperature capability, and strong chemical resistance in demanding pump environments. Cross-referenced to Tsurumi Mechanical Seal H-20T(E) and OEM 025-000-98 for matching manuals, invoices, and service parts lists.

    At a glance:

    • Shaft size: 20 mm

    • Configuration: Double seal (upper + lower)

    • Faces: SiC/SiC – SiC/SiC

    • Elastomers: Viton (FKM)

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

    Explore our full line up of OEM seals 

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    Weight .4 lbs
    Dimensions 2.25 × 2.25 × 2 in
  • Tsurumi 20mm double mechanical seal replacement Tsurumi 025-001-00 mechanical seal H-25T 25mm Ebara 260B 25mm mechanical seal

    Tsurumi 25mm Double Mechanical Seal — OEM 025-001-00 (H-25T)

    Tsurumi 25mm Double Mechanical Seal — OEM 025-001-00 (H-25T)

    Tsurumi 25mm Double Mechanical Seal — OEM 025-001-00 (H-25T)

    Direct-fit aftermarket Tsurumi 25mm double mechanical seal (upper + lower) for submersible pump applications using a 25mm shaft. This seal is sold by OEM cross-reference for fast ordering and is commonly identified as Tsurumi 025-001-00 (H-25T), which supersedes 025-000-07.

    Built for high-duty submersible service, this two-stage seal uses a proven face combination: CAR/SIC on the upper stage and a hard-face SIC/SIC lower stage to handle tough conditions and extend run time.

    At a glance

    • OEM part number: 025-001-00 (supersedes 025-000-07)

    • Seal type: Double mechanical seal (upper + lower)

    • Shaft size: 25mm

    • Face materials: Upper CAR/SIC + Lower SIC/SIC

    Compatibility note: This seal is frequently searched for Tsurumi 25mm applications and is also commonly referenced alongside Ebara 260B 25mm seal searches—always confirm the OEM number and pump model before ordering.

    Explore our full line up of OEM seals 

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    Weight .5 lbs
    Dimensions 2.25 × 2.25 × 2 in
  • Tsurumi H-30 30mm double mechanical seal 025-194-12, 30mm shaft with 44×57 seats, upper and lower seal set

    Tsurumi 30mm Double Mechanical Seal — H-30 / 025-194-12

    Tsurumi 30mm Double Mechanical Seal — H-30 / 025-194-12

    Tsurumi 30mm Double Mechanical Seal — H-30 / 025-194-12

    The Tsurumi H-30 mechanical seal is a direct-fit 30mm double seal set (upper + lower) for Tsurumi submersible pumps running a 30mm shaft, supplied with 44×57 stationary seats for a proper housing fit. This seal is commonly referenced as Tsurumi H-30 and Tsurumi OEM 025-194-12. Supplied with 44 × 57 stationary seats to achieve proper fit in the seal housing on listed applications. Compatible with Tsurumi 100C43.7-CR63.

    At a glance:

    • Shaft size: 30 mm

    • Configuration: Double seal (upper + lower)

    • Seat size: 44 × 57 (verify against your housing bore)

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

    Compatibility / Cross-reference:

    • Compatibility: Tsurumi 100C43.7-CR63

    • Cross-ref: H-30 / 025-194-12

    Explore our full line up of OEM seals 

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    Weight .6 lbs
    Dimensions 2.5 × 2.5 × 2.25 in
  • Tsurumi 35MM mechanical seal

    Tsurumi 35mm Double Mechanical Seal — Tsurumi H-35 / OEM 025-195-13

    Tsurumi 35mm Double Mechanical Seal — Tsurumi H-35 / OEM 025-195-13

    Tsurumi 35mm Double Mechanical Seal —H-35 / 025-195-13

    For Tsurumi 100C43.7-CR-63 and 100C47.5-CR-63 pump rebuilds, this is a direct-fit aftermarket Tsurumi 35mm double mechanical seal (upper + lower) for submersible applications using a 35 mm shaft. This seal is commonly referenced as Tsurumi H-35 / OEM 025-195-13, and many assemblies use 54mm or 57mm stationary seat OD—this listing includes both seats to help match common housing variations.

    At a glance:

    • Shaft size: 35 mm

    • Configuration: Double seal (upper + lower)

    • Seats included: 54 mm OD and 57 mm OD stationary seats

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

    Tsurumi cross references:

    • Tsurumi seal ID: H-35

    • Tsurumi OEM part number: 025-195-13

    Compatibility:

    • Tsurumi 100C47.5-CR63

    • Tsurumi 100C43.7

    This Tsurumi 35mm double mechanical seal (upper + lower) is commonly searched for Tsurumi 100C43.7-CR-63 and Tsurumi 100C47.5-CR-63 rebuilds and leak repairs.

    • Tsurumi 100C43.7-CR-63: OEM parts list shows Mechanical Seal 025-195-13 (H-35, SiC).

    • Tsurumi 100C47.5-CR-63: some OEM parts lists show Mechanical Seal 025-280-16 (H-35A, SiC+CCBN) — verify your pump’s parts list/OEM number to ensure the correct variant.

    What’s included: Double seal assembly (upper + lower) with two stationary seats (54mm OD + 57mm OD) to match common housing variations.

    Search tip: If you arrived here by searching “100C43.7 mechanical seal” or “100C47.5-CR63 mechanical seal replacement,” match your OEM number below for the fastest confirmation.

    Explore our full line up of OEM seals 

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    Weight .6 lbs
    Dimensions 2.5 × 2.5 × 2 in
  • Tsurumi LH430W-61 45/50mm step-shaft double mechanical seal, HT-4550N and 025-001-24, upper and lower set

    Tsurumi 45/50mm Double Mechanical Seal (Step Shaft) — LH430W-61

    Tsurumi 45/50mm Double Mechanical Seal (Step Shaft) — LH430W-61

    Item #025-001-24

    Tsurumi 45/50mm Double Mechanical Seal (Step Shaft) — LH430W-61

    The Tsurumi LH430W-61 mechanical seal is a direct-fit 45/50mm step-shaft double seal set (upper + lower) for Tsurumi LH430W-61 submersible pumps with two shaft diameters per OEM spec. Built as an OEM-style replacement seal assembly for heavy-duty submersible service where long run time and dependable sealing matter.

    Cross-reference: HT-4550N, 025-001-24, 025-000-04, 025-305-18.

    *For full rebuild we recommend- Tsurumi LH430W-61 Seal Kit– which includes mechanical seals + O-ring kit 

    At a glance:

    • Pump application: Tsurumi LH430W-61

    • Manufacturer reference: HT-4550N / 025-001-24

    • Equivalent to: VGMHT-4550N

    • Shaft geometry: Step shaft 45/50 mm

    • Configuration: Double mechanical seal (upper + lower)

    • Form: Seal assembly only (for seals + O-rings, see the kit below)

    Cross-reference: HT-4550N / 025-001-24 / 025-000-04 / 025-305-18.

    Explore our full line up of OEM seals 

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    Weight 1 lbs
    Dimensions 3.25 × 3.25 × 3 in
  • Tsurumi H-50T 50mm double mechanical seal 025-268-18, upper CAR/SiC and lower SiC/SiC faces, upper and lower set

    Tsurumi 50mm Double Mechanical Seal — H-50T / OEM 025-268-18 

    Tsurumi 50mm Double Mechanical Seal — H-50T / OEM 025-268-18 

    Tsurumi 50mm Double Mechanical Seal — H-50T / OEM 025-268-18

    The Tsurumi H-50T mechanical seal is a direct-fit 50mm double seal (upper + lower) for Tsurumi submersible pumps running a 50mm shaft. Equivalent to VGMH-50T (Type VGM562) and cross-referenced as Tsurumi OEM 025-268-18, it is built to OEM-equivalent standards or higher for the same fit and longevity as the original.

    Built for demanding submersible duty, this two-stage seal uses a proven face combination: CAR/SIC on the upper stage with a hard-face SIC/SIC lower stage to improve wear resistance and service life in abrasive applications.

    At a glance:

    • Shaft size: 50 mm

    • Configuration: Double seal (upper + lower)

    • Face sets: Upper CAR/SIC · Lower SIC/SIC

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

    Tsurumi cross references 

    • Tsurumi seal ID: H-50T

    • Tsurumi OEM part number: 025-268-18

    Explore our full line up of OEM seals 

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    Weight 1 lbs
    Dimensions 3.25 × 3.25 × 2.5 in