2-391 AS568 Oring Cad 2-391 AS568 Oring
2-391 AS568
AS568-391 Silicone 50 Duro Red FDA O-Ring for 22 ID X 3/16 CS

Silicone O-Rings 50 Duro Red FDA S500301-391

$ 30.10 per Each
Minimum Order Quantity (MOQ): 1
Out of stock
Qty Price
1 - 1 $30.1000
2 - 2 $22.5750
3 - 4 $19.5650
5 - 9 $16.5550
10 - 19 $13.5450
20+ $12.0400

This item is out of stock. Request a quote and we'll confirm pricing and lead time for your quantity.

Product Details
Material Silicone
Temperature Range -75°F to 450°F
Cross Sectional Shape Round
Hardness 50
Dash 391
Fractional
  • ID: 22
  • CS: 3/16
  • OD: 22-3/8
Actual (Inch)
  • ID: 21.955 ± 0.100
  • CS: 0.210 ± 0.005
  • OD: 22.375
Actual (Metric)
  • ID: 557.61 ± 2.54
  • CS: 5.33 ± 0.13
  • OD: 568.270

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.