Essential details
MOQ:10
Shipping:Express Delivery, Land freight, Ocean freight
Product Introduction
National cross‑reference rotary shaft oil seals are metal‑cased skeleton lip‑type oil seals for direct replacement of National brand serial numbers. Produced by compression vulcanization and metal‑rubber composite assembly. Main rubber materials include NBR, FKM, HNBR and ACM, with metal shell and garter spring for stable radial lip preload. Available structures cover TC, TB, TA, SB, SA single‑lip / double‑lip configurations. These cross‑reference seals match original National part‑number dimensions precisely for drop‑in substitution without housing modification. Featuring reliable oil‑resistance, wear‑resistance and anti‑aging performance, working temperature‑30℃‑180℃ subject to rubber compound. They retain lubricant and block dust, water and grit ingress for rotating shafts. Widely used for automotive transmissions, wheel hubs, engines, gearboxes, agricultural machinery and industrial pumps. Mass cross‑reference part‑number sizes are kept in stock. Custom dimension, rubber material and OEM part‑number marking are supported according to original samples or part‑number lists for aftermarket maintenance projects.
