ITEM NAME:10 pcs O-ring / seal ring made of NBR (nitrile rubber), 60 x 5 mm N3H8 10 pcs O-ring / seal ring made of NBR (nitrile rubber), 60 x 5 mm N3H8 Resistant to harmful chemicals and oil at normal and elevated temperatures. These O-rings are used for sealing of automotive and machine parts as well as used in sanitary facilities and for household appliances, electronic equipment, etc. Product Name: O-Ring material: nitrile rubber (NBR) outer diameter: 60 mm Inside diameter 50 mm thickness 5mm color: black weight: 40 g package contents:10 x O-rings made of NBR Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm..Material: nitrile rubber (NBR). Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. weight: 40 g.