حلقات O من فيتون FKM 0.139" CS × 3.734" ID | AS568-240 | داش 240 | صلابة 90 (30/عبوة)

The 90 durometer hardness gives these a nice firm feel without being brittle, and the 400°F rating gives me confidence for my hot oil application. They seated perfectly in the groove and held pressure on the first try.

I needed o-rings that could handle the 400°F range of my industrial drying cabinet, and these Viton FKM ones arrived with the exact 3.734" inner diameter I measured. They seated perfectly in the groove and haven't shown any signs of melting or cracking after a week of continuous use.

I've been using these for a high-temp pneumatic seal repair, and the 90 durometer feels really solid. They seat nicely in the groove and haven't shown any swelling after a week in contact with a mild solvent. Exactly what I needed for the application.