100/20pcs Nitrile Rubber CS 1/1.5/2.0/2.4/3.1/4mm Oil-resistant Sealing Gasket NBR Plumbing Waterproof Seal Washer This set of nitrile rubber O-rings offers sealing performance for a variety of mechanical and plumbing applications.Made from NBR (nitrile butadiene rubber), these rings are designed to resist oil, wear, and water, making them suitable for use in environments.The material performs effectively within a temperature range of -25°C to 120°C, supporting stable under varying conditions.With -section sizes of 1mm, 1.5mm, 2.0mm, 2.4mm, 3.1mm, and 4mm, and outer diameters ranging from 4mm to 32mm, this assortment includes commonly used dimensions such as 1.5mm, 2.0mm, and 2.4mm to meet diverse sealing needs.The 70 Shore A hardness provides a balanced level of elasticity and , a secure fit and consistent seal in compressed or pressurized systems.These O-rings are commonly used in automotive air conditioning compressor units, plumbing fixtures, and industrial where oil resistance and waterproofing are required.The compact packaging contains 100 or 20 pieces in multiple sizes, allowing for easy organization, storage, and quick access during maintenance or repair tasks.Suitable for both routine replacements and fixes, this set supports efficient and dependable sealing solutions across automotive, mechanical, and household applications.This is a non-OEM replacement part.Any trademarks or model numbers cited are used strictly to demonstrate compatibility.