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

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