"SCIENTIFIC hatchers"

A superior grade of rubber that has softness, resiliency, and durability

Solid, black stoppers contain a high percentage of pure rubber and weigh less than neoprene.

These stoppers are made of a superior grade of rubber that has softness, resiliency, and durability.

Superior Grade Rubber Offers Softness, Resiliency, and Durability.

One Pound of Solid Rubber Stoppers in Various Sizes.

One Pound of One-Hole Rubber Stoppers in Various Sizes.

One Pound of Two-Hole Rubber Stoppers in Various Sizes.

Versatile neoprene stoppers perfect for every laboratory.

Convenient assortments of various sizes of rubber stoppers are sold as one-pound bags.