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.
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Berkeley SO-4757 Gasket
Berkeley SO-4757 Gasket
Item #SMSG 74
Berkeley SO-4757 — Pre-Cut Gasket (S04757)
Berkeley S04757 gasket (SO-4757) is a precision 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 6.625″ × 7.625″; OD 8.625″
Cross-reference
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Berkeley: SO-4757 / so4757
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 C21-10
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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