Features:Made?of?high?quality?rubber?material,?these?O-rings?are?durable?and?has?longer?service?life.They?are?wearable,?corrosion?resistant?and?high?temperature?resistant.There?are?much?different?sizes?of?O-rings?in?this?set?that?can?meet?your?different?need.so?you?do?not?have?to?worry?about?running?out?of?O-rings?for?quite?a?while.They?can?be?widely?used?for?sealing?for?valves,?cars,?pumps,?electrical?equipment,?bearings,?etc.Material:?Rubber