Polymers Processing Methods Molding Injection MoldingHarman Corporation - Plastic Caps, Grips, Plugs, & Custom Moldings Log In : Order History View Cart Home 0 items $ 0.00 Plastic Caps Plastic Grips Plastic Plugs High Temp Paint Masks Custom Dip Molding Custom Inj. Molding Sample Request Photo Gallery About Us Terms Locations Contact Us Log In Our large selection of vinyl plastic products has virtually no limitations in its use. Harman Corporation has been a manufacturer and global supplier of dip molded flexible vinyl products for nearly 50 years. Harman's product line includes plastic caps,