Caps and Closures

Sample Tube Pressure Caps for 3 5 and 10 mm Tubes Tight-fitting polyethylene cap which stays in place even with a build-up of internal vaporization pressures. Assorted (20 each of Red Black White Green Blue and Yellow). 100 per case (100 per CS )

NMR Sample Tube Pressure Caps Polyethylene Assorted Colors for 5 and 10 mm Tubes Fits Tube Size (mm) 5. Color Black A tight-fitting polyethylene cap which stays in place even with a build-up of internal vaporization pressures. (100 per CS )

NMR Sample Tube Pressure Caps Polyethylene Assorted Colors for 5 and 10 mm Tubes Fits Tube Size (mm) 5. Color Yellow A tight-fitting polyethylene cap which stays in place even with a build-up of internal vaporization pressures. (100 per CS )

HPLC Delivery Cap Three Hole ULTRA-WARE Cap Thread GL 45 Three holes have 1/4-28 threads top and bottom with 1/8 I.D. holes through to accept 1/8 O.D. PTFE tubing. Body is PTFE. Supplied complete with three 1/4-28 CTFE plugs and a TFE/propylene o-ring. (1 per EA)

HPLC Cap System Economy 3-Hole ULTRA-WARE Size Economy 3-Hole Cap System with 2 Liter Reservoir The cap body is manufactured from PTFE and is supplied with a TFE/propylene o-ring and a polypropylene screw collar. The connecting threads on the top of the cap use standard 1/4-28 flangeless fittings. (1 per EA)

HPLC Cap System Four Valve Filtration / Delivery THF-Resistant ULTRA-WARE Filter Diameter 47 mm Tetrahydrofuran (THF) widely used as a mobile phase for GPC attacks the CTFE valve stems and TFE/propylene o-rings used in the standard Four Valve Cap. (1 per EA)

HPLC Cap System Five Valve Recirculation / Filtration Standard ULTRA-WARE Filter Diameter 47 mm Specially designed to permit the recirculation of mobile phase back into the reservoir while maintaining the helium sparged environment. (1 per EA)

Screw Thread Cap Phenolic screw thread closure with PTFE liner. For use with 10 and 15mL conical-bottom centrifuge tubes (21020-640 -684). (500 per CS )

KIMAXbrand Stopper Gray Butyl Rubber for Aluminum Seal Finish Closure Straight Sided Fits GPI Aluminum Seal Finish 20

Black Phenolic Cap 38-400 with a polyvinyl liner. Caps are sold 144 per case in 12 bags of 12. (144 per CS )

Caps closures White Polypropylene Linerless for Screw Thread Culture Tube GPI Thread Finish 15-415 Natural polypropylene. Of one-piece construction with a seal achieved due to a unique inner sealing ring. Autoclavable. (1000 per CS )

NMR Sample Tube Pressure Caps Polyethylene Assorted Colors for 5 and 10 mm Tubes Fits Tube Size (mm) 5. Color Green A tight-fitting polyethylene cap which stays in place even with a build-up of internal vaporization pressures. (100 per CS )

Phenolic PTFE-Faced Screw Cap Rubber-lined. Withstands repeated autoclaving. Designed to fit KIMAX brand screw-top tubes with a matching GPI thread (reusable or disposable). GPI thread: 15-415. Identified in ASTM Specification E982 Class B requirements. (300 per CS )

KIM-KAP Polypropylene Cap Disposable. Serve as a closure for KIM-RAK culture tube systems or other culture tubes of comparable sizes. Autoclavable. For tube OD 25mm. Red. (500 per CS )

Black Phenolic Cap 58-400 with a pulp/tinfoil liner. Caps are sold 144 per case in 12 bags of 12. (144 per CS )

Black Phenolic Cap 33-400 with a TaperSeal cone-shaped liner. (2300 per CS )

Caps closures Stopper for Aluminum Seal Finish Gray Butyl Rubber Fits GPIAluminum Seal Finish 20 (1000 per CS )

HPLC Delivery Cap Three Valve Standard ULTRA-WARE Cap Thread GL 45 Three on-off CTFE valves have 1/4-28 threads top and bottom. Valve body is PTFE. Valve stem material is CTFE. O-ring material for valve stem and lower seal is TFE/propylene. (1 per EA)

KONTESbrand Silicone Stoppers Stopper Stopper No. 5 3/8 Hole. These stoppers are manufactured from pure silicone rubber and are steam autoclavable. (1 per EA)

Konts brand Filtration Apparatus 25 mm Microfiltration Assembly Ultra-ware No. 8 Silicone Stopper 3/8 inch (9.5 mm) Hole for Use with 1000 mL Filtration Flask. Sold individually. (1 per EA)

Caps closures White Polypropylene Linerless for Screw Thread Culture Tube GPI Thread Finish 18-415 Natural polypropylene. Of one-piece construction with a seal achieved due to a unique inner sealing ring. Autoclavable. (500 per CS )