ITEM NAME:270 Pcs 18 Sizes Kit Air Conditioning Car Auto Vehicle HNBR O Rings Repair #JT1 Product Description Description: Features: Assortment O-Rings with convenient resalable plastic case Total 18 most popular used O-ring Sizes Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR) and is for mission critical applications HNBR can be formulated to meet application temperatures ranging between -45 degrees C and 165 degrees C, and HNBR is classified by ASTM as DH-type polymer Specifications: Material: Rubber Housing color: Green Size types: 18 sizes (as picture show) Box size (L*W*H): 20.5cm x 10.3cm x 3cm/8.07" x 4.06" x 1.18"(approx) Quantity: 1 set (270 pieces) Included: Package Content: 1 x Set Rubber O Ring.Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR) and is for mission critical applications. Quantity: 1 set (270 pieces).