حلقات O-Ring من مطاط بونا-نايتريل | AS568-464 | داش 464 | صلابة 70 | أسود (10/عبوة)

The 70 durometer hardness is spot on for our hydraulic fittings—they hold up to 250°F without any softening, which is exactly what we needed on the press line. Took a set of ten and every single one seated cleanly with no nicks or flashing.

These o-rings fit perfectly and sealed the hydraulic line on my tractor on the first try. The 70 durometer feels like the right balance of firmness and flexibility.

Pulled these out for a quick plumbing fix and the 70 durometer felt just right—not too stiff, not too soft. They slipped onto the fittings easily and sealed up tight. The -40°F to +250°F range gives me confidence for a variety of uses.