2-221 AS568 Oring Cad 2-221 AS568 Oring
2-221 AS568
AS568-221 Silicone 50 Duro Red FDA O-Ring for 1-7-16 ID X 1/8 CS

Silicone O-Rings 50 Duro Red FDA S500301-221

$ 0.588 per Each
Minimum Order Quantity (MOQ): 52
Out of stock
Qty Price
52 - 59 $0.5880
60 - 129 $0.4410
128 - 255 $0.3822
256 - 510 $0.3234
511 - 1020 $0.2646
1021+ $0.2352

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 221
Fractional
  • ID: 1-7-16
  • CS: 1/8
  • OD: 1-11/16
Actual (Inch)
  • ID: 1.421 ± 0.012
  • CS: 0.139 ± 0.004
  • OD: 1.699
Actual (Metric)
  • ID: 36.09 ± 0.30
  • CS: 3.53 ± 0.10
  • OD: 43.150

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.