Genesis Industries manufactures Vented/Non-vented Draw Off Caps, all of which are made of high density polyethylene (HDPE) for impact resistance. Outside diameter is ribbed to promote secure grip when sealing cap onto container or removing after use. Designed for use in inverted or upright position, caps seal securely to bottle to prevent potential leakage. Various exit port configurations are offered, and Oral Draw Off and Luer Lock ports can be sealed with caps attached by lanyards.