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Red silicone O-rings, 13/16 inch inner diameter, pack of 25

Zoro Select

Zoro Select O-Ring 13/16 in Silicone Red PK25

SKU CH-HM0B-XR655

Silicone O-rings with 13/16 inch inside diameter, 3/32 inch cross-section, 50A durometer, FDA and 3A compliant, red, pack of 25

  • Metal-detectable silicone meets 3A 18-03 and FDA standards
  • Wide -80 °F to 450 °F range suits extreme environments
  • 13/16 in nominal ID fits standard dash-117 grooves
  • Red colour simplifies visual inspection during assembly
  • Pack of 25 keeps spares on hand for maintenance

Application and Purpose

These red silicone O-rings suit food-processing and pharmaceutical equipment that requires FDA-compliant and 3A 18-03 sanitary seals. The metal-detectable material helps quality-control systems spot fragments if a seal fails. Each pack contains twenty-five rings sized to a nominal 13/16 inch inside diameter for standard groove dimensions.

Sustained Load Behaviour

Silicone retains elasticity across a continuous temperature span of -80 to 450 degrees Fahrenheit without hardening or cracking. The medium-hard 50A durometer resists permanent compression set during long clamp cycles and repeated thermal expansion. Metal detectability remains stable throughout the service interval, so inspection sensitivity does not drift over time.

Thermal, Noise and Power Profile

Operating temperature limits are -80 to 450 degrees Fahrenheit, covering cryogenic cleaning and high-heat sterilisation in a single material. The seals add no moving parts, so they generate zero acoustic signature and draw no electrical power. Actual dimensions measure 0.7 inch inside diameter and 0.103 inch cross-section for reliable groove fit.

Highlights

  • Metal-detectable silicone meets 3A 18-03 and FDA standards
  • Wide -80 °F to 450 °F range suits extreme environments
  • 13/16 in nominal ID fits standard dash-117 grooves
  • Red colour simplifies visual inspection during assembly
  • Pack of 25 keeps spares on hand for maintenance

Specifications

BrandZORO SELECT

Questions about this item

Will these 50A durometer silicone rings stay flexible at -80 °F and 450 °F?

Yes, the material is rated for continuous use from -80 °F up to 450 °F, so the rings remain pliable at both extremes.

Do I need a specific groove width to seat the 3/32 in cross-section rings?

The rings have a 3/32 in nominal width and 0.103 in actual width, so the groove must match that cross-section for a proper seal.

Can the red silicone rings be used with stainless-steel fittings that meet 3A 18-03?

Yes, they meet 3A 18-03 and FDA standards, making them compatible with sanitary stainless-steel hardware.

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