Mr O-Ring 130 Viton O-Ring 90A Durometer 1-5/8 in ID Pack of 50

In this review the Mr O-Ring 130 Viton O-Ring pack is evaluated for workshop and industrial sealing tasks; it is aimed at technicians, maintenance teams and DIYers who need reliable, heat-resistant seals in quantity. The bottom line: these 90A durometer Viton rings stand out for their high temperature and chemical resistance, making them a practical choice when working with petroleum fuels, hydraulic fluids or hot-air applications. The pack of 50 reduces downtime from sourcing individual rings and supplies a standard AS568-compatible size for repeatable replacements.

Key Features

• Material: FKM Viton composition offers strong resistance to high temperature, ozone and many organic solvents so seals last longer under harsh conditions.
• Durometer: 90A hardness provides a firm sealing surface that resists extrusion in moderate to high pressure applications while maintaining elasticity.
• Nominal and actual sizes: the nominal 1-5/8 in ID and 1-13/16 in OD correspond to actual measured 1.612 in ID and 1.818 in OD for predictable fit in AS568-sized grooves.
• Temperature range: usable from -26C (-15F) to 232C (450F), covering most hot-air, engine and industrial fluid environments where standard elastomers fail.
• Chemical compatibility: performs well with petroleum products, diesel and biodiesel blends, mineral oils, silicone oils and many strong acids, reducing seal failure across applications.
• Value pack: sold in quantities of 50, this pack lowers per-piece cost and keeps common replacement stock on hand for maintenance teams.

Who It's For

This pack suits maintenance shops, industrial fabricators and anyone servicing fuel, hydraulic or high-temperature equipment who needs a standard AS568-size Viton O-ring in bulk. The rings are especially useful where exposure to fuels, oils or hot air would degrade ordinary nitrile or silicone seals.

Those who should look elsewhere include users needing extremely soft, low durometer seals for delicate compression fittings or applications requiring FDA food-grade certification; this 90A Viton is relatively firm and formulated for chemical and temperature resistance rather than ultra-soft sealing surfaces.

Pros & Cons

Pros

• Excellent high temperature tolerance up to 232C (450F) for demanding thermal environments.
• Broad chemical resistance to fuels, oils and many solvents reduces compatibility concerns in mixed-fluid systems.
• Pack of 50 provides convenient stock for frequent replacements and lowers per-unit cost for shops.
• Actual measured dimensions are provided for accurate sizing and predictable installation in AS568 grooves.

Cons

• 90A hardness is relatively firm, which may be less suitable for low-pressure seals that require very soft compression.
• Not intended for applications that explicitly require food-grade or medical-grade elastomers.

Specifications

Material	Viton (FKM)
Durometer	90A
Nominal dimensions (ID / OD / CS)	1-5/8 in ID / 1-13/16 in OD / 3/32 in CS
Actual dimensions (ID / OD / CS)	1.612 in ID / 1.818 in OD / 0.103 in CS
Metric dimensions	40.94 mm ID / 46.18 mm OD / 2.62 mm CS
Temperature range	-26C (-15F) to 232C (450F)
Pack quantity	50 rings

Our Verdict

The Mr O-Ring 130 Viton O-Ring pack is a sensible purchase for technicians and maintenance teams who need durable, heat- and chemical-resistant seals in a common AS568 size. Its 90A hardness and broad compatibility make it a reliable replacement in engines, fuel systems and high-temperature equipment, and the bulk pack offers clear value for frequent repairs.

Frequently Asked Questions

Are these O-rings compatible with diesel and biodiesel blends?
Yes, Viton FKM has good resistance to diesel and biodiesel blends, making these rings suitable for fuel-system seals.

Do the rings meet AS568 sizing?
The product is offered to AS568 size standards and includes actual measured dimensions for accurate matching to AS568 grooves.

What temperature range will these seals handle?
They are rated from -26C (-15F) to 232C (450F), covering most high-temperature and hot-air industrial uses.