Retaining-ring clip for the lid shock.
Compatibility: Promarks TC-series (TC-280, TC-280F, TC-280B, TC-350, TC-350FLR, TC-420, TC-420F, TC-420LR, TC-520, TC-520F, TC-520LR), SC-series (SC-420, SC-420LR, SC-520LR, SC-680LR, SC-800LR) and DC-series (DC-530, DC-640, DC-650, DC-800, DC-860, DC-900) chamber vacuum sealers.
