Maryland Flex-Tech, Inc. Installation and vulcanization process of condenser expansion joints. Primary applications in the nuclear power and fossil fueled industries. http://www.condenserdogbone.com

Mc Gaskets & PTFE Specialties, Inc. Gaskets, 'O' rings and tank supplies in an assortment of elastomers including epdm, viton, and nitrile. ptfe gaskets in standard and custom sizes. http://www.mcgaskets.com/

McMasters Koss Co. A QS-9000 and ISO-9002 registered provider of seals for OEM and aftermarket automotive, industrial, utility, hydraulic, and pneumatic applications. http://www.mcmasterskoss.com

Melrath Gasket Manufactures metallic, non-metallic & jacketed gaskets & shims. Metal stamping, die, laser & water jet cutting service. http://www.melrath.com

Michael-Stephens Company Replacement seal repair kits for most manufacturers of cylinders, pumps and valves. http://www.sealkits.com/

Miller Products Ltd. Manufacturer of rubber or plastic molded and extruded parts. Offer a large inventory of bumpers, caps, tips, suction cups, grommets and gaskets. http://www.millerproducts.com/

Minnesota Rubber Manufacturer of Quad Rings, Quad Brand and custom molded rubbers and thermoplastic elastomers. http://www.quadion.com

MMI rubber and plastic products Manufacturing and design of pipe gaskets for the polyethylene and pvc industries. http://www.mmi-rubber.com

Moontown Ltd. Manufactures a range of ptfe spring energised, hydraulic and metal csed ptfe lip seals, metal 'O' and 'C' rings. For service in rotary, high pressure and temperature sensitive applications. [requires flash] http://www.moontown.co.uk

Moriteq USA Rubber Co. Manufactures rubber packing, sealing, buffers, and shock absorbers. http://www.moritequsa.com/

Moss Seal Company Supply of quality seals and packings. http://www.moss-seal.com/

Moulages Silicones Speciaux Specialists in injection molding of liquid silicone and over-molding on plastics and steels inserts. Customers are in food applications, automotive, telecommunications, childcare. http://www.silicone-france.com

MSO Seals Manufacturer of seals and gaskets; including metric, standard and hard to find sizes and shapes. http://www.msoseals.com/

MSP Seals, Inc. Distributor of metric and inch size seals. Stocking various international manufacturers. http://www.mspseals.com

Mueller Belting and Specialty Company Inc. Fabricator of gaskets and related products for original equipment manufacturers. http://www.muellernc.com/

N K Rubber Inc Manufacturers of molded rubber components such as 'O' rings, gaskets, bushes, grommets, and sealing rings. http://www.nkrubber.com

Nanjing Flying Swallow Piston Ring Co., Ltd One of Chinas 500 largest machanical industry enterprises produces metallic piston rings. http://www.feiyan.com.cn/

NE Seal Industrial Products Ltd. Specializing in custom gasket die making, gasketing products of all descriptions, mechanical seals and servicing/rebuilding mechanical seals. http://www.neseal.com

New England Die Cutting, Inc. Fabricates products of non-metallic materials. Manufactures own dies, offers rotary die cutting services, EMI-RFI shielding, stamping. http://www.nedc.com/

Ningbo Dongya Mechanical Seal Manufacture Manufactures mechanical seals used in water, engine cooling, centrifugal, general industrial, and submersible pumps. Seal faces in ceramic, tungsten carbide, carbon, viton, and nbr. http://www.china-dongya.com/