2-320 AS568 Oring Cad 2-320 AS568 Oring
2-320 AS568
AS568-320 Silicone 70 Duro Red FDA O-Ring for 1-1/8 ID X 3/16 CS

Silicone O-Rings 70 Duro Red FDA S700301-320

$ 0.4256 per Each
Minimum Order Quantity (MOQ): 71
Ships within 7 days
Qty Price
71 - 82 $0.4256
83 - 176 $0.3192
177 - 352 $0.2554
353 - 704 $0.1915
705 - 1409 $0.1490
1410+ $0.1383

Ordering in large quantities? Ask for a lead time quote — we'll get back to you with pricing and lead time.

Product Details
Material Silicone
Temperature Range -75°F to 450°F
Cross Sectional Shape Round
Hardness 70
Dash 320
Fractional
  • ID: 1-1/8
  • CS: 3/16
  • OD: 1-1/2
Actual (Inch)
  • ID: 1.100 ± 0.012
  • CS: 0.210 ± 0.005
  • OD: 1.520
Actual (Metric)
  • ID: 27.94 ± 0.30
  • CS: 5.33 ± 0.13
  • OD: 38.600

Silicone O-rings are made from a synthetic elastomer composed of silicon, oxygen, hydrogen, and carbon. They are widely used for their excellent flexibility, high-temperature resistance, and exceptional aging properties. Silicone O-rings offer great thermal stability, low toxicity, and resistance to weathering, ozone, and UV exposure, making them ideal for medical, automotive, and food-grade applications. Many silicone compounds are **FDA-compliant**, making them suitable for food and pharmaceutical uses.

Silicone Recommended Uses

Medical and pharmaceutical applications, food and beverage processing, automotive components, aerospace industries, high-temperature sealing applications, and electrical insulation.

Silicone Not Recommended

Petroleum-based oils, fuels, concentrated acids, alkalis, ketones, and steam under high pressure.

Silicone Limitations

  • Not resistant to petroleum-based fluids and fuels.
  • Lower mechanical strength compared to other elastomers.
  • Not ideal for applications requiring high tear and abrasion resistance.
  • Can swell or degrade when exposed to certain chemicals and oils.
Silicone Usable Temperature Range

-85 to 450°F (-65 to 232°C)

Silicone Also Known As

Silicone Rubber, VMQ (Vinyl Methyl Silicone), Polysiloxane.