Rubber Stopper, #000

Rubber Stopper, Size #000

Fits 12X75 Test Tubes. All of our black rubber stoppers are laboratory grade. Available as solid only. NC-0969

$0.40
Rubber Stopper, #4

Rubber Stopper, Size #4

Fits 25X150 and 25X200 Test Tubes and 24/40 ground glass openings. All of our black rubber stoppers are laboratory grade. Available as solid or 1-hole. Hole diameter is 5mm. NC-0959

Rubber Stopper, #6

Rubber Stopper, Size #6

Fits 250ml Pyrex Erlenmeyer Flask; 250ml Bomex Erlenmeter Flask; and 250ml and 500ml Bomex Florence Flask. All of our black rubber stoppers are laboratory grade. Available as solid or 1-hole. NC-0961

Rubber Stopper, #7

Rubber Stopper, Size #7

Fits 500ml Pyrex Erlenmeyer Flask; 500ml Pyrex Filter Flask; and 250ml Bomex Filter Flask. All of our black rubber stoppers are laboratory grade. Available as solid or 1-hole. NC-0962