حلقات O من مطاط بونا-ن النتريل | AS568-435 | داش 435 | صلابة 70 | أسود (35 / عبوة)

I was worried about getting the right size for a water line repair, but the 70 durometer feels tough and the markings match the dash number exactly. Already finished the job and no leaks so far.

I’ve been using these for a hydraulic repair, and the 70 durometer feels just right for a snug seal without being too stiff. The -40°F to +250°F range gives me confidence they’ll hold up in my outdoor gear.

These Buna-N o-rings are exactly the 70 durometer I needed for a hydraulic application, and they fit perfectly on the first try. The 35-pack is generous for the price, and the rubber feels durable even at 250°F. I've already ordered another set for spares.