AS568-912 V90 FKM/Viton® O-Rings – High Heat & Chemical Resistant Fluorocarbon (FKM) 90 Durometer Brown (SAE-12)

The AS568-912 V90 Viton® (FKM) O-Ring from The O-Ring Store LLC is a premium brown 90-durometer fluorocarbon seal engineered for high-pressure SAE-12 hydraulic fittings and aggressive chemical applications. Designed for maximum durability and performance, this O-Ring resists compression set, extrusion, and fluid attack—providing a dependable seal in demanding temperature, chemical, and pressure environments.

With exceptional oil and heat resistance, the Viton® V90 compound ensures long-term sealing integrity, reduced maintenance costs, and improved uptime for mission-critical hydraulic and industrial systems.

Operating temperature: -15° to +400°F (–26° to +204°C)

Material & Performance Details

Compound: Viton® / FKM Fluorocarbon
Durometer: 90 Shore A
Color: Brown

Viton® (FKM) is a high-performance fluorocarbon elastomer recognized for outstanding resistance to fuels, oils, lubricants, and most industrial chemicals. The 90A hardness improves extrusion resistance and dimensional stability under pressure, making this material ideal for static and dynamic sealing in high-pressure systems.

Excellent resistance to:

• Petroleum-based oils and hydraulic fluids
• Diesel, gasoline, and aviation fuels
• Synthetic lubricants and mineral oils
• Ozone, weathering, and aging
• Aliphatic and aromatic hydrocarbons

Limited capability with:

• Ketones (e.g., acetone, MEK)
• Esters and ethers

Not compatible with:

• Brake fluids (glycol-based)
• Ammonia and amines
• Strong polar solvents

Sizes & Measurements

• Cross Section (CS): 0.070 in (1.78 mm)
• Inside Diameter (ID): 0.612 in (15.54 mm)
• Outside Diameter (OD): 0.752 in (19.10 mm)
• Part Number: AS568-912 V90 FKM
• AS568 Dash Number: 912 (SAE-12)

Applications & Use Cases

Engineered for demanding sealing environments requiring resistance to both high pressure and aggressive fluids:

• Hydraulic systems and SAE Boss fittings
• Fuel handling and transfer systems
• Chemical processing and laboratory equipment
• Oil & gas production and refining
• Aerospace, marine, and automotive engines
• Industrial valves, pumps, and compressors

Key Specifications

• Material: Viton® / FKM Fluorocarbon
• Durometer: 90 Shore A
• Color: Brown
• Temperature Range: –15 °F to +400 °F (–26 °C to +204 °C)
• Pressure Rating: Up to 5,000 psi (application dependent)
• Certifications: SAE J200 M2HK compliant; full lot traceability available

Why Buy from The O-Ring Store LLC

• ISO 9001:2015-certified quality assurance
• USA-based stock and same-day shipping on in-stock items
• Custom sizing, materials, and compounds available
• Full lot traceability and Certificates of Conformance on request
• Experienced technical support team ready to assist
• Competitive pricing with uncompromised quality and consistency

FAQs

1. What applications benefit most from 90 durometer Viton® O-Rings?
High-pressure hydraulic systems, SAE Boss fittings, and applications prone to extrusion benefit most from the increased hardness of 90A Viton®.

2. Can Viton® handle continuous exposure to hot oils or fuels?
Yes. Viton® offers exceptional resistance to automotive and industrial oils, fuels, and lubricants up to +400°F (+204°C).

3. Are these brown O-Rings compatible with Skydrol or glycol-based fluids?
No. Viton® is not recommended for phosphate ester-based hydraulic fluids (Skydrol) or glycol brake fluids.