The Fastening ring is an OEM replacement part for Bosch front-loading washers. It is part of the clamp securing the door seal in place. This spring clamp works with the door boot seal, which helps form an airtight barrier between the washer cabinet and moving door during cycles. The clamp fits securely around the seal, applying pressure to maintain tight contact with the door rim. Symptoms of a bad spring clamp include: Water leaks from around the door seal Excess moisture buildup inside the washer Noise of water sloshing around during spins Prolonged use and repeated compression of the spring clamp can cause material fatigue over time. This OEM Bosch part is also compatible with Thermador, Gaggenau and some Kenmore models.

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