ITEM NAME:20 Pcs O Ring: 10 Pcs 32Mm OD 25Mm Inner Od. Black Nitrile Rubber O Ring Oi U5G9 20 Pcs O Ring: 10 Pcs 32Mm OD 25Mm Inner Od. Black Nitrile Rubber O Ring Oi U5G9 20 Pcs O ring: 10 Pcs Red and 10 Pcs brick red Product Name: O Ring; Black O Ring: Material: Nitrile Rubber (NBR) Outer diameter: 32mm / 1.2 inches Thickness: 4mm / 0.1 inches Color: Black brick red O-ring: Material: silicone Thickness: 3.5 mm; Inside diameter: 25 mm; Outside diameter: 32 mm Color: brick red Package Contents: 20 x O ring.20 Pcs O Ring: 10 Pcs 32Mm OD 25Mm Inner Od. Black Nitrile Rubber O Ring Oi U5G9. Material: Nitrile Rubber (NBR). 20 Pcs O ring: 10 Pcs Red and 10 Pcs brick red. Black O Ring 20 x O ring.