Custom manufactured elastomeric and plastic parts and elastomeric sealing rings and gaskets, including sealing rings; gaskets; diaphrams; refrigerant seals for compressors of air conditioners; zone valve seals for hot water heating radiators; rubber seals in mixing valves for single lever water faucets; hydraulic valves for backhoes; aerosol valves; rubber dust control covers for machinery shifting mechanisms and for hydraulic cylinder mechanisms and for mechanical joint mechanisms; rubber couplers for machinery; rubber pump impellers; brake seals; carburetion seals; filter seals; seals for automobile window washers; rubber pressure-transmitting diaphragms for power brakes; air valve diaphragms for two-way and four-way air valves; thermostat seals; swimming pool filter seals; seals for pressure valves; dust seals for gauges; seals for pumps; driver rollers for drums of laundry dryers; pump impellers for laundry washers; seals for oil filter cartridges for automotive vehicles; valves; bellows used on farm machinery to confine and direct the flow of seed into the ground; seals for plumbing fixtures; automotive transmission seals; custom molded elastomeric and plastic industrial equipment parts; suction cups; drive wheels; idler wheels; pressure rollers; sleeves and dust covers; brake cups; grommets; poppets; U-cups; rubber fittings; and insulators