Lyophilization Stoppers for serum bottle and serum vial freeze drying applications. This all purpose design for lyophilization applications reduces the possibility of legs sticking to each other. Available in both two-leg and three-leg stopper styles.
These M29 black rubber microstoppers are ideally suited for cutting to length for any opening from 4-12mm. Microstopper has extremely high tensile and modulus, with a low durometer of 40 (+/-5), low free sulfur, and low extractables. Versatile laboratory stopper for small orifice plugging.
Sleeve stoppers are plug stoppers with fold-over skirts. This type of stopper is used on serum vials, serum bottles and other crimp-finish containers that do not require aluminum seal or overcap. Sleeve stoppers can be used as injection sites for multiple dose entry. Rubber sleeve stoppers are manufactured from natural red rubber, a general-purpose rubber formulation that has excellent resealable properties, making them ideal for use in multi-puncture applications.
Natural red or grey rubber Snap-On Stoppers. This design provides maximum sealing for vials with a blow-back glass finish, which is a small ridge in the interior of the vial's neck. The snap-on rubber stopper locks into the blow-back ridge, providing a tight seal and keeping the snap-on rubber stopper from backing out. This style is not recommended for vials with a straight-walled finish. The blow-back feature is typically found in vials from North American manufacturers.
Straight Plug Rubber Stoppers. This design of the straight plug rubber stopper provides maximum sealing for laboratory vials with a straight-wall glass finish. The straight-wall interior finish is typically found in vials from European manufacturers. This style is not recommended for vials with a blowback feature. Available in natural rubber, Viton and Butyl compound type rubbers in a variety of colors.
These versatile Twistit® rubber stoppers are four stoppers in one. Multipurpose laboratory stopper offers versatility not available with conventional stoppers. 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 M66 white rubber demonstrates exceptional aging characteristics with high resistance to deformation even after extensive autoclaving. Stopper is vacuum-tested at 30in of Mercury, and has safe, convenient countersunk lead-into holes. Autoclavable.