Hillman's O-rings are one of the simplest, yet most engineered, precise and useful seal designs ever developed. This assortment of O-rings features parts measuring 3/32" wide with parts running 7/32" thru 2-5/8" in inner diameter. O-rings in this assortment are made of high-strength Viton rubber for improved resistance to corrosion caused by extreme temperatures, ozone, oxygen, and synthetic oils. O-rings are ideal for myriad applications. DIY projects, plumbing services, and contracting work are made easier with Hillman O-rings. Full assortments of #56287 contain five (5) refills comprised of Hillman item numbers #405126 - #405130.