HNBR O-Rings | AS568-429 | Dash 429 | 80 Durometer (5 / Pkg.)

Name: HNBR O-Rings | AS568-429 | Dash 429 | 80 Durometer (5 / Pkg.)
Brand: Mutual Screw
SKU: ZMUSHSN80429B1
Price: 36.68 USD
Availability: InStock
Rating: 5.0 (5 reviews)

HNBR O-Rings | AS568-429 | Dash 429 | 80 Durometer (5 / Pkg.) - Main image

$36.68 ~~$56.43~~ In stock

HNBR o-rings in AS568-429. 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: 429
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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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)

Chloe ★★★★★ Oct 23, 2026

Working on a hydraulic fitting that sees steam cleaning, these AS568-429 rings seated perfectly and haven't softened at all at 275°F. The 80 durometer feels just right for the gland depth—not too stiff, not too soft.

Leo U. ★★★★★ Oct 22, 2026

I needed a tough seal for a high-heat hydraulic repair and these HNBR 429s handled the 300°F max without any issue at all. The 80 durometer gives them a firm, reliable feel during installation.

Elizabeth ★★★★★ Oct 21, 2026

The 80 durometer feels just right for my high-temp application, and the -40°F to 300°F range covers everything I need. These fit the AS568-429 groove perfectly, no leaks after a week of steady use.