M1.5x28 Viton O-Ring 75A Durometer - Pack of 100 Mr

In this review the M1.5x28 Viton O-Ring is evaluated for technicians, hobbyists, and maintenance crews who need small, chemically resistant seals in quantity; the single biggest reason to buy is the material resilience - made from black Viton (fluorocarbon elastomer) it tolerates fuels and many chemicals while holding shape across a wide temperature range, which makes these O-rings a dependable choice for threaded barrel protection, small hydraulic fittings, and carburetor seat seals.

Key Features

• Material: Viton construction provides strong resistance to heat, fuels, and many chemicals for reliable sealing in demanding environments.
• Hardness: 75A durometer gives a balance of flexibility and firmness so the ring compresses to seal yet resists extrusion on cylindrical surfaces.
• Dimensions: 28 mm internal diameter with 31 mm outer diameter and 1.5 mm cross-section fits small metric housings and threaded barrels precisely.
• Temperature Range: Rated for wide service temperatures, allowing use from sub-freezing conditions up to high-heat applications.
• Chemical Compatibility: Suitable for non-flammable hydraulic fuels, silicone oil, and many hydrocarbons, enabling use in automotive and industrial fluid systems.
• Bulk Pack: Supplied as a pack of 100 for repeat maintenance or multiple installations, reducing the need for frequent reordering.

Who It's For

This pack is best for maintenance technicians, motorsport or motorcycle owners, and hobbyists who replace small seals often or need spare O-rings for multiple threaded components; the quantity and material make it economical for recurring use in small assemblies. It is also a sensible choice for anyone sealing small hydraulic or fuel-related connections where compatibility with hydrocarbons and silicone oils is important.

Those needing resistance to strong alkalis, ammonia gas, glycol-based brake fluids, or super-heated steam should look for a different elastomer, since Viton has known vulnerabilities with certain low molecular weight acids and amines. For larger seals or metric sizes outside the 28 mm ID range, a different size will be required.

Pros & Cons

Pros

• Material choice yields excellent heat and fuel resistance for reliable long-term sealing.
• 75A durometer balances sealing ability with durability against extrusion on cylindrical overlaps.
• Pack of 100 delivers good value and convenience for repeat maintenance or projects.
• Works well for protecting threads and small carburetor or fuel system seats, as customers report.

Cons

• Not compatible with some chemicals such as ammonia gas, strong alkalis, and certain brake fluids, so chemical compatibility must be checked for specific uses.
• Size is specific to 28 mm ID applications and will not suit larger metric ports or flanges.

Specifications

Material	Viton (fluorocarbon elastomer)
Durometer	75A
Cross-Section	Round, 1.5 mm width
Dimensions	28 mm ID, 31 mm OD
Temperature Range	-15 degrees F (-26 degrees C) to 450 degrees F (232 degrees C)
Package Quantity	Pack of 100

Our Verdict

The M1.5x28 Viton O-Ring pack is a practical, value-oriented option for anyone who needs multiple small, heat- and fuel-resistant seals; its Viton composition and 75A hardness deliver dependable sealing for threaded barrels, small hydraulic fittings, and carburetor seats, provided the user avoids media known to attack Viton. For routine maintenance and applications within its chemical compatibility, it represents solid value.

Frequently Asked Questions

Are these O-rings suitable for fuel systems?
Yes - they are Viton and compatible with many fuels and hydrocarbons, making them appropriate for non-flammable hydraulic fuels and common fuel system uses.

Will they fit threaded Springfield barrels and similar parts?
Customers report good fit and function on Springfield echelon and 10mm auto Springfield threaded barrels; measure the 28 mm ID to confirm fit for your part.

Can they be used at very high temperatures?
They are rated for a wide temperature range up to 450 degrees F (232 degrees C) depending on application conditions, but check specific exposure and pressure for your use.