2-161 AS568 Oring Cad 2-161 AS568 Oring
2-161 AS568
AS568-161 Silicone 70 Duro Red FDA O-Ring for 5-1/2 ID X 3/32 CS

Silicone O-Rings 70 Duro Red FDA S700301-161

$ 1.24 per Each
Minimum Order Quantity (MOQ): 25
Ships within 7 days
Qty Price
25 - 28 $1.2400
29 - 60 $0.9300
61 - 120 $0.7440
121 - 241 $0.5580
242+ $0.5025

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Product Details
Material Silicone
Temperature Range -75°F to 450°F
Cross Sectional Shape Round
Hardness 70
Dash 161
Fractional
  • ID: 5-1/2
  • CS: 3/32
  • OD: 5-11/16
Actual (Inch)
  • ID: 5.487 ± 0.035
  • CS: 0.103 ± 0.003
  • OD: 5.693
Actual (Metric)
  • ID: 139.37 ± 0.89
  • CS: 2.62 ± 0.08
  • OD: 144.610

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.