M1.5x23 Viton O-Ring 75A Durometer, 100 Pack - Durable Seal

In this review the M1.5x23 Viton O-Ring pack is judged for mechanics, fabricators, and hobbyists who need a reliable metric seal in corrosive or high-heat environments; the single biggest reason to buy is its material choice - black Viton - which gives it broad chemical and temperature resistance that many generic elastomers lack. The reviewer found the 75A durometer offers a useful balance between flexibility and compression resistance, and the 23 mm ID size makes these rings especially handy for threaded barrel protection, carburetor seat seals, and other cylindrical mating surfaces where a compact, repeatable seal is required.

Key Features

• Material: Viton (fluorocarbon elastomer) provides excellent resistance to fuels, oils, and many chemicals so the rings last longer in demanding service.
• Temperature range: Rated to perform across a wide span of temperatures so the same O-ring can be used in both low-temperature and high-heat applications without rapid hardening or softening.
• Durometer: 75A hardness balances compressibility and resilience to hold a seal under light to moderate static load while resisting extrusion.
• Cross-section: Round profile creates a reliable seal between overlapping cylindrical surfaces and thread protectors where a simple ring is desirable.
• Pack quantity: Supplied as a pack of 100 which is practical for shops or users who replace or stock O-rings regularly, reducing downtime for maintenance.

Who It's For

This O-ring pack is aimed at professional technicians, small repair shops, and serious DIYers who need a compact, chemical-resistant seal for hydraulic fittings, carburetor seats, or threaded barrel protection. The combination of Viton and 75A hardness means it suits applications exposed to fuels, silicone oils, and many aromatic and aliphatic hydrocarbons.

Those who should look elsewhere include users who need compatibility with ammonia, strong alkalis, or glycol-based brake fluids, since Viton is vulnerable to some of these chemistries; also, if a much softer or much harder material is required for a specific dynamic seal, a different durometer or elastomer would be a better match.

Pros & Cons

Pros

• Good chemical resistance from the Viton material, making these O-rings suitable for fuels and many solvents.
• Useful temperature tolerance that covers a wide range of workshop and engine conditions.
• 75A hardness provides dependable sealing and keeps thread protectors and small fittings in place, as customers report.
• Pack of 100 offers clear value for routine maintenance and multiple projects.

Cons

• Viton is not resistant to certain substances like ammonia gas, strong alkalis, or glycol brake fluids, so compatibility must be checked for some specialized fluids.
• The fixed 23 mm ID size limits use to applications that match that dimension; buyers needing other sizes must source alternatives.

Specifications

Our Verdict

The M1.5x23 Viton O-Ring pack is a pragmatic choice for technicians and hobbyists who need a compact, chemical-resistant sealing solution that performs across a broad temperature range; its 75A hardness and quantity of 100 make it good value for routine maintenance and thread protection, provided your fluid environment is compatible with Viton.

Frequently Asked Questions

Are these O-rings suitable for fuel exposure?
Yes, Viton is compatible with many fuels and fuel-related hydrocarbons, making these O-rings suitable for non-flammable hydraulic fuels and common fuel-contact applications.

What temperature range will they withstand?
The rings are specified for a wide range, suitable from low temperatures up to the high-heat limits of Viton in typical service; check specific application temperatures against the material range.

Will they work for carburetor seat seals or thread protectors?
Customers have reported the size and hardness fit carburetor seat seals and help keep thread protectors in place, so they are a practical option when the 23 mm ID matches the part.