Best O-Rings for Barrel Seals (2026)
We evaluated products by dimensional fit range, Viton (fluorocarbon) material properties, 75A durometer suitability, package sizing options, and aggregated user ratings to rank fit and value for barrel seals
This roundup covers O-rings suited for sealing barrel-style fittings and housings, ranked for dimensional fit and overall value based on material, durometer, and package options. Picks were chosen by comparing size coverage, Viton (fluorocarbon) chemical compatibility, and user ratings where available to prioritize reliable barrel-seal performance
Top Picks
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1
O-Ring, Viton 75A, 1-3/16 in ID 1-7/16 in OD 1/8 in wide, black (pack of 50)
Viton O-rings with 75A hardness for sealing between cylindrical surfaces. Wide temperature range and chemical compatibility; 50-pack. Customers note precise fit and reliable heat resistance
- Viton fluorocarbon elastomer
- 75A hardness
- 1-3/16" ID and 1-7/16" OD
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2
Viton O-Ring, 75A, 8.5" ID / 9" OD, 1/4" W, pack of 2
Two Viton O-rings with 75A hardness, sized 8-1/2" ID and 9" OD, 1/4" width. Suitable for chemical and fuel use, with wide temperature tolerance. Customers note good fit and durable performance
- Viton material
- 75A durometer
- 8-1/2" ID and 9" OD
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3
Viton O-ring 75A, 15/16" ID 1-1/8" OD 3/32" wide, pack of 100
Viton O-ring for chemical and fuel contact. Round cross-section seals between cylindrical surfaces, with a wide temperature range. Customers note precise fit and good heat resistance
- Viton material
- 75A hardness
- AS568A standard compliance
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4
O-Ring, Viton, 75A, 3" ID x 3.5" OD, 1/4" 5-pack
Viton O-rings with 75A hardness for chemical and fuel compatibility. Round cross-section provides a seal between cylindrical surfaces across a wide temperature range. Customers note precise fit and reliable performance in heat and replacement applications
- Viton elastomer
- 75A durometer
- AS568A conformity
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5
Viton O-Ring, 75A, 1-3/8" ID, 1-1/2" OD, 1/16" thick, Pack of 100
Viton O-ring with 75A hardness for chemical and fuel compatibility. Round cross-section provides a seal between cylindrical surfaces. customers note solid fit and heat resistance in various applications
- chemical and fuel compatibility
- wide temperature range
- pack of 100
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6
O-Ring, Viton, 75A, 2-7/8" ID, 3-3/8" OD, 1/4" width (Pack of 5)
Viton O-rings for chemical and fuel compatibility, 75A hardness, round cross-section for effective sealing. Suitable across wide temperature range. Customer note: excellent fit and durability in heat
- Viton 75A hardness
- wide temperature tolerance
- AS568A standards reference
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7
251 Viton O-Ring 75A 5-1/8" ID 5-3/8" OD 1/8" W (pack of 10)
Viton O-ring with 75A durometer for sealing between cylindrical surfaces. Wide temperature range and chemical compatibility. Customers note precise fit and reliable leak resistance
- Viton chemical and fuel compatibility
- 75A durometer for durability
- AS568A standard compliance
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8
O-Ring Viton 75A 5/16" ID 7/16" OD 1/16" Width Black (Pack of 500)
Viton O-ring with 75A hardness for sealing cylindrical surfaces. Suitable for a wide temperature range and various chemicals; designed for durable leak resistance. Customers note precise fit and reliable performance in heat
- Viton with chemical and heat resistance
- 75A durometer for reliable seal contact
- large pack quantity