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Red silicone O-ring 3.4 in inside diameter 0.275 in cross section

Zoro Select

Zoro Select O-Ring 3-1/2 in 1/4 in Silicone Red 70A FDA 417

SKU CH-JAZG-TC87H

A 3.4 in ID red silicone O-ring rated 70A durometer for -80 to 450 °F service and FDA compliance

  • FDA-compliant silicone for food-safe sealing
  • Withstands -80 °F to 450 °F extremes
  • 70A durometer balances flexibility and strength
  • Dash 417 size: 3.4 in ID × 0.275 in width
  • Metal-detectable for contamination control

Zoro Select Silicone O-Ring 3-1/2 in

This new Zoro Select O-ring is a round-section silicone seal with a nominal 3-1/2 inch inside diameter and 1/4 inch cross-section width. It carries a 70A durometer hardness rating and meets FDA requirements for food and pharmaceutical contact. The red colour allows quick visual identification during assembly or inspection.

Suited for static seals in food-grade

Engineers specifying seals for static glands in processing equipment will find the -80 to 450 degrees F temperature range and FDA compliance match those needs. Buyers who need X-ray detectable material or a different durometer for dynamic applications should look at alternative seal types.

Dash 417 size with 3.4 in actual ID

The critical specification is the actual inside diameter of 3.4 inches combined with an actual width of .275 inches, which defines the gland dimensions this dash 417 ring will fill. The actual outside diameter of 4.025 inches confirms the installed envelope for groove verification.

Highlights

  • FDA-compliant silicone for food-safe sealing
  • Withstands -80 °F to 450 °F extremes
  • 70A durometer balances flexibility and strength
  • Dash 417 size: 3.4 in ID × 0.275 in width
  • Metal-detectable for contamination control

Specifications

BrandZORO SELECT

Questions about this item

How do I install the 3-1/2 in silicone O-ring and which groove dimension matches the 0.275 in actual width?

Seat the ring in a groove cut for a 1/4 in nominal cross-section; the 0.275 in actual width requires the gland depth and width specified for dash 417 so the seal compresses evenly without twisting.

What maintenance or replacement will the red 70A silicone O-ring need over time?

Inspect periodically for surface cracking, hardening or permanent set; sustained exposure near the 450 °F upper limit accelerates aging, so plan replacement when elasticity drops or the seal no longer returns to its 3.4 in inside diameter.

What is the first performance limit the dash 417 O-ring hits under continuous high-temperature use?

The 450 °F maximum temperature rating is the primary limit; prolonged operation at or above this point causes the silicone to harden and lose sealing force before any other property fails.

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