Mutual Screw & Supply

0.139" CS X 5.484" ID EPDM O-Rings | AS568-254 | Dash 254 | 70 Durometer | Black (100 / Pkg.)

0.139" CS X 5.484" ID EPDM O-Rings | AS568-254 | Dash 254 | 70 Durometer | - Main image
$56.15 $82.58 In stock

EPDM o-rings in AS568-254, 5.484" inner diameter by 0.139" 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: 254
  • Cross-section: 0.139" (3.53 mm)
  • Inner diameter: 5.484" (139.29 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -65°F to +300°F (-54°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 100 per package
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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 (4.4 / 5 · 5 reviews)

Abigail O. ★★★★★

I’ve been using these AS568-254 o-rings for a hot water recirculation loop that hits near 250°F, and the EPDM handles the heat without any sign of swelling or cracking. The 5.484" ID was a dead-on match for my flanged connection, and the 0.139" cross-section gives a nice firm seal when compressed.

Amelia ★★★★★

Been using these to seal a coolant reservoir on an older engine rebuild and the 70 durometer feels just right for the groove. The rubber is noticeably supple compared to some harder o-rings I've tried before, and so far no leaks after a few heat cycles.

Penelope ★★★★☆

Installed a set of these EPDM o-rings on a coolant line and they fit the groove perfectly—the 5.484 inside diameter was spot on. The 70 durometer feels a little softer than some I've used, but they seal well and hit the temperature range I needed.