029 Viton O-Ring 1-1/2 in ID 75A - High Temp Chemical Seal

In this review the 029 Viton O-ring is judged as a practical, industrial replacement for applications that need chemical and heat resistance. It is aimed at technicians, maintenance crews, and hobbyists who replace seals on fuel bottles, hydraulic fittings, or firearm/attachment components; the single biggest reason to buy is the material: genuine Viton fluorocarbon elastomer rated for use across a wide temperature range, which gives reliable sealing where lesser elastomers would soften or deteriorate. The review focuses on fit, durability, and compatibility rather than aesthetics or packaging.

Key Features

• Material: Made from Viton fluorocarbon elastomer to resist fuels, aromatic and aliphatic hydrocarbons, and many chemicals common in industrial settings.
• Temperature Range: Rated from -15 degrees F to 400 degrees F so it maintains sealing properties in high-heat and low-temperature environments.
• Durometer: 75A hardness provides a firm seal with good resistance to penetration and compression set for longer service life.
• Cross-section: Round profile designed to form a compression seal between overlapping cylindrical parts for effective leak control.
• Standards: Manufactured to meet the AS568A dimension standard so replacements align with common O-ring sizes and grooves.
• Chemical Compatibility: Suitable with non-flammable hydraulic fuels, silicone oil, chlorinated hydrocarbons, and many hydrocarbons for broad application use.

Who It's For

The 029 Viton O-ring is best for professionals and serious DIYers who work with fuel systems, pneumatic seals, or firearm components where exposure to fuel, heat, and solvents is expected. It suits maintenance departments needing consistent, standards-compliant replacements and for anyone requiring a compact pack of common-size rings.

Those who should look elsewhere include users needing resistance to strong alkalis, ammonia gas, glycol-based brake fluids, or super-heated steam, since Viton is vulnerable to those chemistries; also, if a softer, more flexible sealing material is required than 75A provides, consider a lower-durometer elastomer.

Pros & Cons

Pros

• Excellent heat and fuel resistance for reliable sealing under thermal stress.
• Standard AS568A sizing and consistent 1-1/2 in ID make replacements straightforward.
• Pack quantity provides good value for workshops and repeat maintenance tasks.

Cons

• Not suitable for environments with strong alkalis, amines, or glycol-based fluids.
• The 75A hardness may be firmer than needed for some low-pressure static sealing applications.

Specifications

Our Verdict

The 029 Viton O-ring is a dependable, cost-effective choice when chemical compatibility and high temperature performance matter. It is particularly good value for maintenance shops and users replacing seals on fuel-handling equipment or heat-exposed assemblies, offering predictable fit and long service life when used within Vitons compatibility limits.

Frequently Asked Questions

Can this O-ring be used with gasoline and aromatic fuels?
Yes; Viton is compatible with many fuels and aromatic hydrocarbons, making it suitable for fuel-handling seals.

Is the size compatible with standard AS568A grooves?
Yes; the ring meets AS568A sizing conventions for easy replacement of common O-ring grooves.

Will this O-ring resist steam and strong alkalis?
No; Viton is known to be vulnerable to super-heated steam and strong alkalis or amines, so avoid those environments.