Sta-Rite Gaskets
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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
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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
Sta-Rite C-20-103 Gasket
Sta-Rite C-20-103 Gasket
Item #SMSG 12B
Sta-Rite C-20-103 — Pre-Cut Gasket (C20103 / C20123)
The Sta-Rite C-20-103 gasket is a high-quality replacement component designed for use in Sta-Rite pump systems. This gasket provides a reliable seal between mating surfaces, helping prevent leaks and maintain proper system performance.
Manufactured to meet original specifications, the C-20-103 gasket ensures a precise fit and dependable performance in demanding applications.
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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Dimensions: ID 3.125″ × OD 4.500″
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Material: 3/64″ vellumoid (vegetable fiber), brown (standard); Red Rubber
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Cross-reference: Sta-Rite C-20-103 (C20103)
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 C-20-123 Gasket
Sta-Rite C-20-123 Gasket
Item #SMSG 12BRR
Sta-Rite C-20-123 — Pre-Cut Gasket (C20103 / C20123)
The Sta-Rite C-20-123 gasket is a high-quality replacement gasket designed for use in Sta-Rite pump assemblies. This gasket helps provide a reliable seal between mating surfaces, preventing leaks and supporting proper pump performance during service or rebuilds.
This part is commonly referenced as C-20-123 or C20123
Manufactured for a clean fit and even compression, the C-20-123 gasket is designed for dependable performance in pump repair and maintenance applications.
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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Dimensions: ID 3.125″ × OD 4.500″
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Material: 3/64″ Red Rubber
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Cross-reference: Sta-Rite C-20-123 (C20123)
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
Sta-Rite C-20-21 Gasket
Sta-Rite C-20-21 Gasket
Item #SMSG 4
Sta-Rite C-20-21 — Pre-Cut Gasket (C2021)
The Sta-Rite C-20-21 gasket is a high-quality replacement gasket designed for use in Sta-Rite pump assemblies. This gasket helps provide a reliable seal between mating surfaces, preventing leaks and supporting proper pump performance during service or rebuilds.
This part is commonly referenced as C-20-21 or C2021.
Manufactured for a clean fit and even compression, the C-20-21 gasket is designed for dependable performance in pump repair and maintenance applications.
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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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 6.375″ × OD 7.875″
Cross-reference
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Sta-Rite: C-20-21 / C2021
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 C-20-46 Gasket
Sta-Rite C-20-46 Gasket
Item #SMSG 1
Sta-Rite C-20-46 — Pre-Cut Gasket (C2046)
The Sta-Rite C-20-46 gasket is a high-quality replacement gasket designed for use in Sta-Rite pump assemblies. This gasket helps provide a reliable seal between mating surfaces, preventing leaks and supporting proper pump performance during service or rebuilds.
This part is commonly referenced as C-20-46 or C2046. Manufactured for a clean fit and even compression, the C-20-46 gasket is designed for dependable performance in pump repair and maintenance applications.
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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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 7.937″ × OD 9.625″
Cross-reference
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Sta-Rite: C-20-46 / C2046
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
Sta-Rite C-20-72 Gasket
Sta-Rite C-20-72 Gasket
Item #SMSG 10
Sta-Rite C-20-72 — Pre-Cut Gasket (C2072)
The Sta-Rite C-20-72 gasket is a high-quality replacement gasket designed for use in Sta-Rite pump assemblies. This gasket helps provide a reliable seal between mating surfaces, preventing leaks and supporting proper pump performance during service or rebuilds.
This part is commonly referenced as C-20-72 or C2072. Manufactured for a clean fit and even compression, the C-20-72 gasket is designed for dependable performance in pump repair and maintenance applications.
Specs
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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 4.750″ × OD 5.625″
Cross-reference
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Sta-Rite: C-20-72 / C2072
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime-we’re here to help
Sta-Rite C-20-86 Gasket
Sta-Rite C-20-86 Gasket
Item #SMSG 2
Sta-Rite C-20-86 — Pre-Cut Gasket (C2086)
The Sta-Rite C-20-86 gasket is a high-quality replacement gasket designed for use in Sta-Rite pump assemblies. This gasket helps provide a reliable seal between mating surfaces, preventing leaks and supporting proper pump performance during service or rebuilds.
This part is commonly referenced as C-20-86 or C2086. Manufactured for a clean fit and even compression, the C-20-86 gasket is designed for dependable performance in pump repair and maintenance applications.
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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Material: 3/64″ vellumoid (vegetable fiber), brown
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Dimensions: ID 8.187″ × OD 9.750″
Cross-reference
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Sta-Rite: C-20-86 / C2086
Explore our full lineup of Pre-cut Gaskets.
Looking for more? Check out our Mechanical Seals, Pump Repair Kits , & Parts/Accessories
Have questions? Call us anytime- we’re here to help
Sta-Rite C-20-87
Sta-Rite C-20-87
Item #SMSG 70
Sta-Rite C-20-87 — Pre-Cut Gasket (C2087)
Pre-cut housing/volute gasket for Sta-Rite pump assemblies. 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 9.312″ × OD 10.875″
Cross-reference
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Sta-Rite: C-20-87 / C2087
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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