Mutual Screw & Supply

0.21" CS X 0.787" ID EPDM O-Rings | AS568-315 | Dash 315 | 70 Durometer | Black (120 / Pkg.)

0.21" CS X 0.787" ID EPDM O-Rings | AS568-315 | Dash 315 | 70 Durometer | Black - Main image
$36.68 $51.66 In stock

EPDM o-rings in AS568-315, 0.787" inner diameter by 0.21" cross-section. Service range -65°F to +300°F (-54°C to +149°C). Also known as EPM, EPR, Nordel, Vistalon.

Specifications

  • Product type: O-Ring
  • Material: EPDM
  • AS568 dash size: 315
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.787" (19.99 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -65°F to +300°F (-54°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 120 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Joshua J. ★★★★★

The 0.787" inner diameter fits perfectly into my brass valve assembly, sealing tight even at 200°F. The 70-durometer hardness feels firm but not brittle, and the whole pack arrived neatly separated. I've already used three, and each one snapped in place without any leaks on the first try.

Olivia ★★★★★

Needed a reliable seal for a small pneumatic line that sees constant heat, and these EPDM o-rings hold up without hardening. The -65°F to +300°F range gives me confidence they'll last.

Sofia A. ★★★★★

The durometer feels spot-on for a snug seal—I’ve torqued these onto a few fittings without any squish or deformation. They’ve held up fine in hot coolant temps around 250°F so far, which matches the rated range.