17616 O-RING FOR CHECK VALVE PLUG

SKU: 3925

Genuine CAT Pumps o-ring 17616, an 80-durometer o-ring for valve plugs — it seals the valve plug against the pump head. It is documented on CAT 66DX-series pumps, where each valve plug (part 48760) carries one 17616 o-ring, and appears in CAT valve service kits alongside the valve, seat, and seat o-ring. Replace it whenever the valve plugs are removed for service, since a flattened o-ring will weep under pressure. Listed as SKU 3925.