428 Viton / FKM O-ring 75A Durometer Black, Sterling Seal and Supply ( 25 Count )

Made of Viton (fluorocarbon elastomer) for use with a variety of chemicals and fuels. O-ring Size - Actual (b) per AS568A Metric O-ring Size per AS568A (b)ID (Nominal): 4-7/8 OD (Nominal): 1/4 CS (Nominal): 5-3/8 Durometer (hardness) of 75A for resistance to penetration Round cross-section to provide a seal between cylindrical overlapping surfaces Can be used across a wide temperature range from -15 degrees F (-26 degrees C) to 400 degrees F (205 degrees C)