383 Pieces O Ring Assortment Set Air Conditioning System Seal Kit 4138938 Replacement for Hitachi EX Excavator

Feature: 1. Perfect Fitmen: According to the original factory specifications, O rings reference OE number is 4138938. Wonderful replacement for Hitachi EX excavator. 2. Wide Application: Used in pipelines, machinery, hydraulic and pneumatic maintenance, faucets, garages, workshops, automobiles, doors and windows, electrical appliances, bearings, pumps, etc. 3. Premium Material: Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile Butadiene Rubber (HSN), is a special class of Nitrile Butadiene Rubber (NBR) that can meet application temperatures between ‑45 degrees Celsius and 165 degrees Celsius. 4. High Oil Resistance: Resistant to heat, low high temperatures, air, water, petroleum products, mineral and hydraulic oils, natural gas, kerosene, silicone oils, non aromatic fuels and solvents for long lasting reliable service. 5. Complete Seal Kit: The seal kit contains o rings of various sizes, 383 pieces in total, neatly sorted and comes in a plastic case for easy portability, easy to use. Specification: Item Type: O Ring Assortment Kit Material: Rubber OE: 4138938 Fitment: Replacement for Hitachi EX excavator. Package List: 1 x Rubber O Rings Kit1 x Storage Box