This 300-piece assortment of Buna-N O-rings features a 3/32" material thickness and a 70 Durometer rating, ensuring durability and resistance in demanding environments. The inside dimensions range from 1-13/16" to 2-1/2", while the outside dimensions span from 2" to 2-11/16". Each size is represented with 25 pieces, conveniently organized in a 12-hole metal parts box. Perfect for fleet maintenance and automotive repairs, these O-rings provide reliable sealing solutions across various applications.