"SCIENTIFIC HATCHERIES"

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

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

One Pound of Solid Rubber Stoppers in Various Sizes.

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

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

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

Superior Grade Rubber Offers Softness, Resiliency, and Durability.

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

Versatile neoprene stoppers perfect for every laboratory.