12" to 18" ID X 0.070" (1.78mm) C/S Silicone 70 Duro Vulcanized O-Ring

300mm ID to 450mm ID / 12" to 18" ID

Spliced & Vulcanized O-Rings: Custom Solutions for Unique Applications

Our spliced and vulcanized O-Rings are ideal when standard O-Rings don't meet your needs or when you need a faster solution than what molded O-Rings can provide. At The O-Ring Store LLC, we expertly craft O-Rings from extruded O-Ring cord, vulcanizing them to achieve the size (ID) you require. We offer seamless spliced Standard Inch and Metric O-Rings in all standard materials, across various cross sections, as well as convenient Splicing Kits. Each O-Ring <48" undergoes rigorous inspection with the Olypsys® Large Format Grid measuring system to guarantee maximum accuracy.

Current Lead Times: Dependent on cord stock availability.

• Up to 24 O-Rings: Typically ~5 days. 
• 25-100 O-Rings: Typically ~10-15 days.
• 100+ O-Rings: Requires Custom Quote. 

This process supports custom sizes that differ from standard molded O-Rings, ensuring you receive a perfectly tailored solution.

Vulcanized Silicone O-Rings (VMQ) Duro 70 - Brick Red:

The term silicone covers a large group of materials in which vinyl-methyl-silicone (VMQ) is often the central ingredient. Silicone elastomers as a group have relatively low tensile strength, poor tear and wear resistance. However, they have many useful properties as well. Silicone has a good heat resistance, good cold flexibility, and good ozone and weather resistance as well as good insulating and physiologically neutral properties.

Chemical Resistance:

• Engine and transmission oil (e.g.: ASTM oil No.1)
• Animal and vegetable oil and grease
• Brake fluid (non-petroleum base)
• Fire-resistant hydraulic fluid, HFD-R and HFD-S
• High molecular weight chlorinated aromatic hydrocarbons (including flame-resistant insulators, and coolant for transformers)
• Beer, Coffee, Whiskey and Milk
• Moderate water resistance
• Diluted salt solutions
• Sea Water
• Ozone, aging and weather resistant.

Not Compatible with:

• Silicone Grease and Oils
• Super-heated water steam over 250°F (121°C)
• Acids and alkalis
• Low molecular weight chlorinated hydrocarbons (trichloroethylene)
• Chlorine wet or dry
• Aromatic mineral oil
• Transmission Fluid
• Hydrocarbon based fuels
• Diesel Oil
• Aromatic hydrocarbons (benzene, toluene).

Operating temperature: -75° to +400°F (-59° to +204°C)