Plasticoid
One Hole Black Rubber Stoppers
One Hole Black Rubber Stoppers, regular length. For general laboratory and other uses. Each stopper has its size in raised figures on top. Dimensions in accordance with NBS specifications. Sold by the pound. Same as R6200, except with one pre-drilled hole. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6220
Plasticoid Twistit® White Rubber Stoppers
The versatile Plasticoid Twistit® White Rubber Stoppers are four stoppers in one. These multipurpose stoppers offer versatility not available with conventional stoppers. Three simple twist-off seals permit easy conversion from a solid to a one, two or three-hole stopper for all your laboratory needs. Soft, resilient, natural, white rubber demonstrates exceptional aging characteristics and withstands repeated autoclaving. Nipples can be “Twisted Off” revealing the through hole as needed. Standardized packaging in 10 Unit poly bags per shelf box. Convenient countersunk holes Excel
Catalog No.: R6360
Plasticoid M35 Two Hole Green Neoprene Stoppers
Plasticoid M35 Green Neoprene Stoppers are pre-dilled with two hole. These stoppers are the same physical dimensions as our black rubber stoppers, but can be used in areas where rubber would be attacked by reagents or solvents. Synthetic, neoprene stoppers contain no free sulfur, exhibit good resiliency and shelf life. Green Neoprene Stoppers withstands petroleum products and oils as well as most inorganic acids and bases. Stoppers are a highly visible green color for easy identification. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6320
Plasticoid M35 One Hole Green Neoprene Stoppers
Plasticoid M35 Green Neoprene Stoppers are pre-dilled with one hole. These stoppers are the same physical dimensions as our black rubber stoppers, but can be used in areas where rubber would be attacked by reagents or solvents. Synthetic, neoprene stoppers contain no free sulfur, exhibit good resiliency and shelf life. Green Neoprene Stoppers withstands petroleum products and oils as well as most inorganic acids and bases. Stoppers are a highly visible green color for easy identification. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6300
Plasticoid M35 Solid Green Neoprene Stoppers
Plasticoid M35 Solid Green Neoprene Stoppers. These stoppers are the same physical dimensions as our black rubber stoppers, but can be used in areas where rubber would be attacked by reagents or solvents. Synthetic, neoprene stoppers contain no free sulfur, exhibit good resiliency and shelf life. Green Neoprene Stoppers withstands petroleum products and oils as well as most inorganic acids and bases. Stoppers are a highly visible green color for easy identification. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6280
Two Hole Black Rubber Stoppers
Two Hole Black Rubber Stoppers, regular length. For general laboratory and other uses. Each stopper has its size in raised figures on top. Dimensions in accordance with NBS specifications. Sold by the pound. Same as R6200, except with two pre-drilled holes. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6240
Solid Black Rubber Stoppers
Solid Black Rubber Stoppers, regular length. For general laboratory and other uses. Each stopper has its size in raised figures on top. Dimensions in accordance with NBS specifications. Sold by the pound. (Sample Photo Displayed. Individual items may differ from the image shown)
Catalog No.: R6200
Plasticoid M18 Kjeldahl One Hole White Rubber Stoppers
Plasticoid M18 Kjeldahl One Hole White Rubber Stoppers are specially made for use with 500 mL and 800 mL Kjeldahl nitrogen determination flasks. Natural Rubber, Pure Gum stoppers have a low sulfer content and provides excellent durabilty and resilience. Hole diameter on stoppers with hole is 8 mm. One-hole style can be enlarge or the solid stopper bored to take larger sizes. For use with food grade applications such as homebrew beer and wine making used with carboys. (Sample Photo Displayed. Individual items may differ from the image shown.)
Catalog No.: R6380