HNBR O-Rings | AS568-431 | Dash 431 | 80 Durometer (5 / Pkg.)

Name: HNBR O-Rings | AS568-431 | Dash 431 | 80 Durometer (5 / Pkg.)
Brand: Mutual Screw
SKU: ZMUSHSN80431B1
Price: 42.08 USD
Availability: InStock
Rating: 4.6 (5 reviews)

HNBR O-Rings | AS568-431 | Dash 431 | 80 Durometer (5 / Pkg.) - Main image

$42.08 ~~$58.44~~ In stock

HNBR o-rings in AS568-431. Service range -40°F to +300°F (-40°C to +149°C). Also known as HSN, Highly Saturated Nitrile.

Specifications

Product type: O-Ring
Material: HNBR
AS568 dash size: 431
Durometer: 80 Shore A
Temperature range: -40°F to +300°F (-40°C to +149°C)
Measurement type: Imperial
Pack quantity: 5 per package

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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 (4.6 / 5 · 5 reviews)

Nicholas ★★★★★ Oct 23, 2026

I needed a -431 size for a high-heat application, and these HNBR rings handled the 280°F oil bath without any swelling. The 80 durometer feels firm but sealed perfectly on the first try.

Edward ★★★★★ Oct 22, 2026

Finally got these to rebuild my pneumatic actuator, and the 80 durometer feels noticeably firmer than the standard ones I used before. No leaks so far, and they slid into the groove without any struggle.

Hannah ★★★★★ Oct 21, 2026

Fit perfectly on the hydraulic coupling I was rebuilding, and the 80 durometer is exactly the firmness I needed for that high-pressure seal. The -40°F rating is a bonus since my shop isn’t heated.