Mutual Screw & Supply

0.21" CS X 0.412" ID EPDM O-Rings | AS568-309 | Dash 309 | 70 Durometer | Black (250 / Pkg.)

0.21" CS X 0.412" ID EPDM O-Rings | AS568-309 | Dash 309 | 70 Durometer | Black - Main image
$36.16 $53.17 In stock

EPDM o-rings in AS568-309, 0.412" 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: 309
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 0.412" (10.46 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -65°F to +300°F (-54°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 250 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 (5.0 / 5 · 5 reviews)

Owen ★★★★★

I needed these for a hot water valve rebuild and the 70 durometer seems just right—not too soft, not too hard. The 0.412" inner diameter was a perfect fit and the price for 250 pieces is a steal compared to buying individually.

Zoe ★★★★★

The temperature range is what sold me—these handle -65°F to 300°F, so they’re perfect for my outdoor equipment that sits through freezing winters. The 70 durometer hardness feels solid but still seals easily with a little pressure. For a 250-pack at this price, I’m set for years of rebuilds.

Ella ★★★★★

I needed o-rings for a fuel system repair and chose these because of the wide temperature rating. The 70-durometer material held up perfectly during installation, and the 0.412-inch inner diameter fit snugly into the groove.