Polyethylene caps | 96 well caps | Colored caps
There are several types of push caps:
Push caps for shell vials are convenient and easy to install. The negative tolerance of these plastic caps and resulting friction keeps these push caps in place.
Blue push caps for 8mm & 11mm serum finish or snap top vials have a thinned penetration point for needle safety and minimizing missed injections. These caps are for single injection use as they do not reseal.
Clear push caps for 8mm crimp top vials have a re-sealable, fitted septa. If evaporation is concerning, crimp caps for 8mm vials may be recommended.
Plugs for 96 well plates are specific for single use, 700ul glass inserts in plates that seal each insert individually. Made from polyethylene.