Features: 1.Multiple Purpose: O ring can be applied to pipelines, machinery, faucets, garages, workshops, automobiles, doors and window, electrical appliances, bearings, pumps, etc. 2.Advanced Material: Air conditioning seal washer kit is made from HNBR material which is resistant to low temperature and high temperature with range between ?45 to 165. 3.366 Pieces Quantity: The kit consists of a total of 366 pieces of O rings with different size, packed in a plastic box with many compartments, convenient for using and easy to carry. 4.Functional Tool Kit: Universal O ring rubber kit is an essential tool for all workshop and field service engineers, professional manufacturing for high accuracy and stable performance. 5.Excellent Function: The car O ring seal assortment kit could assist to repair your vehicle air conditioner for maximum performance, not easy to tear apart, reliable and durable. Specification: Item Type: O Ring Seal Kit_x000D_ Material: HNBR Rubber_x000D_ Application: _x000D_ Universal for Truck Farm Vehicle Tractor_x000D_ Applied to pipelines, machinery, faucets, garages, workshops, automobiles, doors and window, electrical appliances, bearings, pumps, etc. PackageList: 1 x O Ring Seal Kit (366pcs) 1 x Storage Box