Berkeley Gaskets
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Berkeley 6 x 6-7/8 Gasket
Berkeley 6 x 6-7/8 Gasket
Item #SMSG 57
Berkeley 6″ × 6-7/8″ — Pre-Cut Gasket
Berkeley gasket 6×6-7/8 is a replacement gasket designed for reliable sealing in pump and water transfer applications. Pre-cut housing/volute gasket for Berkeley pump assemblies this gasket is precision-cut to seat cleanly and compress evenly—helping prevent leaks during routine service or rebuilds.
Specs
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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 6.000″ × OD 6.875″
Cross-reference
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Berkeley gasket: 6 × 6-7/8 spec
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Shaft Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
Berkeley S04757 Volute Gasket
Berkeley S04757 Volute Gasket
Item #SMSG 74
Berkeley S04757 Volute Gasket — Pre-Cut (S-04757)
The Berkeley S04757 gasket is a pre-cut volute gasket for Berkeley centrifugal pump service, equivalent to Berkeley part number S-04757. Cut from vellumoid fiber to seat cleanly against the volute face and compress evenly, it holds a positive seal through routine rebuilds without cold-flowing or tearing on removal.
Specs
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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 6.625″ (6-5/8″) × OD 7.625″ (7-5/8″)
Cross-Reference: Berkeley S04757
Volute gaskets are a wear item — any time a Berkeley pump comes apart for an impeller, wear plate, or mechanical seal replacement, the volute gasket should be replaced rather than reused. A compressed fiber gasket that has already taken a set will not re-seal reliably, and a weeping volute joint on an irrigation or transfer pump is a slow leak that gets blamed on the shaft seal.
Rebuilding the whole wet end? Pair this gasket with the matching mechanical seal — call or text us with your Berkeley model number and we’ll match the full kit.
One teardown. Two wear parts.
The Berkeley S04757 volute gasket is the case gasket in the 1-1/4″ Type B rebuild. Any time you’re in far enough to pull this gasket, the mechanical seal is already exposed — and a seal that has run against a worn sleeve will not re-seat. Doing the gasket alone means coming back for a second teardown.
Complete the rebuild:
• PS-185 Mechanical Seal — 1-1/4″ shaft, 1.875″ × 0.437″ seat, Type N-11 (Type C/21). Nitrile, Viton, and SiC/SiC options.• Berkeley Stainless Shaft Sleeve — the third wear item in this joint. Replace it with the seal, or the new faces wear early.Doing the full 1-1/4″ Type B job? Get the seal, sleeve, and this gasket together in the Berkeley TP Series Pump Repair Kit — matched to the same service and shipped in one box.
Running a 1-3/4″ seal size? Larger Type B models take a bigger seal in the same volute joint. Check your motor frame to confirm. The PS-446 is our 1-3/4″ single spring seal — and covers Berkeley B3TPMS among others. Check your nameplate before ordering.
Not sure which seal size your pump takes? Call or text 561-414-1046 with your Berkeley model number and we’ll match the full set.
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Shaft Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
S05126 Volute Gasket — Berkeley & Sta-Rite
S05126 Volute Gasket — Berkeley & Sta-Rite
Item #SMSG 75
Berkeley / Sta-Rite S05126— Pre-Cut Gasket
The S05126 is a direct-fit volute gasket for Berkeley B-Series centrifugal pumps, cut from vegetable fibre to original specifications. The same part carries house numbers across the Pentair family — Berkeley S05126, Sta-Rite S05126, and Vak-Pak 9118.
Volute gaskets seal the joint between the pump case and the volute, and they are a one-use part. Reusing a compressed gasket after a rebuild is a slow leak waiting to happen, because the fibre has already taken its set and will not seal evenly a second time.
Lower your cost per gasket with quantity-based pricing—discounts are automatically applied at checkout as your order quantity increases. See the pricing table above.
Specs
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Berkeley Reference: S05126
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Sta-Rite Reference: S05126
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Inner Diameter: 9-1/8″ T
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Thickness: 1/32″
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Configuration: Volute, 8-hole
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Material: Vegetable fibre (vellumoid)
Applications
Fits Berkeley B-Series centrifugal pumps using the 9-1/8″ volute gasket, across the ZR and ZP model families. Also used in Sta-Rite and Vak-Pak pump assemblies under their own numbers. Confirm your gasket dimensions and hole count, or match your OEM number, before ordering. Not sure which gasket your pump takes? Call our seal specialists at 561-414-1046 — we’ll match it from your pump nameplate, no purchase required.
One teardown. Two wear parts.
The Berkeley S05126 volute gasket is the case gasket in the ZP-series Type B rebuild. Any time you’re in far enough to pull this gasket, the mechanical seal is already exposed — and a seal that has run against a worn sleeve will not re-seat. Doing the gasket alone means coming back for a second teardown.
Complete the rebuild:
• PS-185 Mechanical Seal — 1-1/4″ shaft, 1.875″ × 0.437″ seat, Type N-11 (Type C/21). Nitrile, Viton, and SiC/SiC options.• Berkeley Stainless Shaft Sleeve — the third wear item in this joint. Replace it with the seal, or the new faces wear early.Doing the full ZP-series job? Get the seal, sleeve, and this gasket together in the Berkeley ZP Series Pump Repair Kit — matched to the same service and shipped in one box.
Check your motor frame. This gasket is the same across the ZP range — the seal and sleeve are not. Frames 143JM to 215JM take the 1-1/4″ PS-185 and the S19310 sleeve. Frames 254JM and larger take the 1-3/4″ PS-446 and the S18869L sleeve. The model number alone won’t tell you which you have.
Not sure which seal size your pump takes? Call or text 561-414-1046 with your Berkeley model number and we’ll match the full set.
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
Sta-Rite / Berkeley / Pentair Diffuser Ring C21-10
Sta-Rite / Berkeley / Pentair Diffuser Ring C21-10
Sta-Rite / Berkeley / Pentair Diffuser C21-10 — Gasket / Seal Ring
Pre-cut diffuser seal ring (C21-10) is a direct replacement component designed for use in Sta-Rite, Berkeley, and Pentair pump systems to maintain proper flow and performance. Sized to seat cleanly on the diffuser for even compression and a leak-tight seal during service or rebuilds.
Cross-reference / Names:
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Part: C21-10 Diffuser
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Also called: Diffuser gasket / seal ring
Compatibility:
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Motor range: ~1–2.5 HP diffuser applications
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Pump families: Sta-Rite / Berkeley / Pentair equivalents
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Also used on: Anthony centrifugal pool pumps (select models)
Why this part:
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Direct-fit profile for quick, reliable installs
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Consistent thickness for uniform sealing pressure
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Smooth edges for easier alignment and reassembly
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Shaft Seals, Pump Repair Kits , & Parts/Accessories
Have questions?- Call us anytime- we-re here to help
STA-RITE / BERKELEY / PENTAIR DIFFUSER RING C21-2
STA-RITE / BERKELEY / PENTAIR DIFFUSER RING C21-2
Sta-Rite / Berkeley / Pentair Diffuser Ring C21-2
Pre-cut diffuser ring gasket (C21-2) for Sta-Rite, Berkeley, and Pentair D-series / ED-series pumps. Sized to seat cleanly on the diffuser, providing uniform compression and a leak-tight seal after service or rebuilds.
Cross-references & use:
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Part: C21-2 Diffuser Ring
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Also called: D-Series Diffuser O-Ring / Gasket
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Pump families: Sta-Rite D & ED series (Berkeley/Pentair equivalents)
Why choose this part:
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Direct-fit profile for fast, reliable installs
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Consistent thickness for even sealing pressure
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Smooth edges for easier alignment during reassembly
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Shaft Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
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