270pcs Assortment Kit Car HNBR A/C System Air Conditioning O Ring Seals Set Tool

description":"Features: Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly Saturated Nitrile (HSN) is special class of nitrile rubber (NBR),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. The heavy duty rubber rings is available for using in applications requiring higher resistance to chemicals and higher temperatures than NBR. The o-ring assortment set is packed by a snap-close clear view plastic case with compartments for identification. 270pcs in a case totally and 18 kind of O-rings by sizes. Suitable for professional plumping, supplies, tools, automotive, garage, plumber, mechanic, workshops, repairs, air &gas connections. Specification: 20 pieces 7/32\" x 1/16\" 20 pieces 1/4\" x 1/16\" 20 pieces 6.8x 1.9 20 pieces 5/16\" x 1/16\" 20 pieces 7.8 x 1.9 20 pieces 8 x 2 20 pieces 8.8 x 1.9 15 pieces 7/16\" x 1/16\" 15 pieces 7/16\" x 3/32\" 15 pieces 11 x 2 15 pieces 12 x 2 15 pieces 13.9 x 1.8 10 pieces 9/16\" x 3/32\" 10 pieces 14x 2 10 pieces 15x 2 10 pieces 17x 2 10 pieces 11/16\" x 1/ 16\" 10 pieces 11/16\" x 1/8\" Size:20.5cm*10.5cm*3cm Package weight:154g color:green Package List:  270 x Auto air conditioning O Rings Set