Corks, Stoppers and Accessories

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )

Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic green neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Sold as one-pound bags (10 per PK )

Blue neoprene stoppers with 1 hole (5 mm dia): Bottom 17mm Top 20mm Length 26mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )

Neoprene stoppers can be used in areas where rubber would be attacked by reagents or solvents. Synthetic green neoprene stoppers have good resiliency and shelf-life. They withstand petroleum products and oils as well as most inorganic acids and bases. Sold as one-pound bags (10 per PK )

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Withstand temperatures from –25 to 70°C (–13 to 158°F). Available in solid, one-hole, and two-hole versions. Each stopper has its size marked in raised figures. All stoppers are 25 mm tall. Sold as one-pound bags. (10 per PK )

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )

These grade XXX tapered cork stoppers are an excellent choice for general laboratory use. They are effective for both liquid and solid mediums, and offer light weight, resilience and compressibility. Chemically inert and moisture resistant. Sold as packs (100 per PK )

Solid blue ASTM neoprene stoppers: ASTM Size: #7 Bottom 30mm Top 37mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Solid blue ASTM neoprene stoppers: ASTM Size: #1 Bottom 14mm Top 19mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Solid blue ASTM neoprene stoppers: ASTM Size: #10.5 Bottom 45mm Top 53mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Good quality plated brass cork borers with handles (1 per EA)

Solid blue neoprene stoppers: Bottom 21mm Top 24mm Length 28mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Blue neoprene stoppers with 2 holes (4 mm dia): Bottom 15mm Top 18mm Length 24mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Blue ASTM neoprene stoppers with 1 hole (5 mm dia): ASTM Size: #12 Bottom 54mm Top 64mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Blue neoprene stoppers with 2 holes (5 mm dia): Bottom 33mm Top 38mm Length 38mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Blue ASTM neoprene stoppers with 2 hole (5 mm dia): ASTM Size: #11.5 Bottom 50mm Top 63mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Blue ASTM neoprene stoppers with 2 hole (5 mm dia): ASTM Size: #2 Bottom 16mm Top 20mm Length 25mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )

Silicone stoppers are particularly useful due to their inert and nonreactive nature. It will not impair the growth of tissue cultures and resistant to most chemical acids and solvents. (12 per PK )

Blue neoprene stoppers with 1 hole (5 mm dia): Bottom 25mm Top 28mm Length 28mm Made from long lasting neoprene rubber, oil resistant, Use up to temps of 250°F / 120°C Pack of 10 (10 per PK )