
ORK pioneered the design and production of four-lobed seals with the Quad-Ring® Brand seal design. These seals are used today around the world for a wide variety of static and dynamic sealing applications.
Avoiding Spiral Twist
To minimize breakaway friction, an O-Ring groove must be wide enough to allow rolling or twisting of the seal. In the long stroke of a reciprocating seal application, this twisting action can strain and eventually tear the rubber, causing a failure mode known as spiral twist.
To prevent spiral twist, the Quad-Ring® Brand seal's four-lobed configuration is designed to withstand the distortion and extrusion often caused by high or pulsating pressure. To accommodate these forces, a Quad-Ring® Brand seal uses a narrower groove than a comparable O-Ring seal.
Longer Seal Life
Because less squeeze means less friction with the four-lobe design, seals last longer. Therefore, equipment in which the Quad-Ring® Brand seal is installed will operate longer and require less maintenance.
No Parting Line on Sealing Surface
Unlike O-Rings, where parting lines are on the sealing surface, Quad-Ring® Brand seals' parting lines lie between the lobes, away from the sealing surface. This design eliminates the problems of leakage resulting from a parting line's irregular surface.
Materials | ||
Materials & Temperature Ranges | Fluid Examples | |
Suitable With | Not Suitable With | |
Nitrile (NBR) -40ºC to 120ºC -40ºF to 248ºF | Petroleum Oils Hydraulic Oils Water | Brake Fluids Ketones Phosphate Esters Strong Acids (H2S) |
Hydrogenated Nitrile (HNBR) -40ºC to 150ºC -40ºF to 302ºF | Petroleum Oils H2S (10%) Water | Polar Solvents Brake Fluids Strong Acids |
Ethylene Propylene(EPDM) -50ºC to 150ºC -58ºF to 302ºF | Brake Fluids Water/ Hot Water Steam | Mineral Oils Ozone at High Temperatures |
Fluoroelastomer (FKM) -20ºC to 200ºC -4ºF to 392ºF | Petroleum Oils Silicone Oils Gasoline | Brake Fluids Ammonia Gas Steam |
Perfluoroelastomer (FFKM) -20ºC to 320ºC -4ºF to 608ºF | Most Media | Liquid Sodium & Potassium Fluorinated Solvents & Refrigerants |
Silicone (VMQ) -70ºC to 220ºC -94ºF to 428ºF | Vegetable Oil Water Ozone | Acids &Alkalis Hot Water & Steam (>120ºC) |
Neoprene (CR) -40ºC to 120ºC -40ºF to 248ºF | Ammonia Refrigerants Ozone | Aromatic Hydrocarbons Polar Solvents Toluene |
PTFE -200ºC to 280ºC -148ºF to 536ºF | Most Media | Fluorine Molten Alkali Metals Strong Oxidizing Agents |
Polyurethane (PU) -40ºC to 90ºC -40ºF to 194ºF | Most Petroleum Oils | Brake Fluids Hot Water Steam |
PEEK -70ºC to 260ºC -94ºF to 500ºF | Most Media | Hydrochloric, Nitric & Sulfuric Acids |
Dongguan Ruichen Sealing Co., Ltd.
DONGGUAN RUICHEN SEALING CO., LTD
SHANGRAO RUICHEN SEALING CO.,LTD
Ruichen Sealing Co., Ltd was built in 2006, The company has two branches in Dongguan and Shangrao.They are Dongguan Ruichen Sealing Co., Ltd. and Shangrao Ruichen Sealing Co., Ltd.. We mainly produce rubber o rings , gaskets , ball , grommet and customized rubber part. Shangrao Ruichen as production base , covering a total area of 18,000 square meters, with total assets of 100 million yuan, more than 300 employees and 46 sets of plate vulcanizer machines.
Ruichen focus on research and production of rubber seals. At present, we have more than 10,000 sets of molds for O-ring and other seal rings. O-ring sizes include American standard (AS568), Japanese standard (JIS) and GB series. The material meets the requirements of various environmental regulations (ROHS2.0 REACH224 FDA, PAHS, WRC, WARS, VOC, UL), etc. Products are widely used in automotive parts, connectors, electronic products, pumps and valves, pneumatic, power tools, medical instruments and other fields.
Ruichen use ISO9001, IATF16949, ERP, HRP systems to establish and improve the quality management, process management, labor cost control. Ruichen adhering to the "love management, fuhui sustainable (carry forward good moral character, create good quality)" concept, aim to seal industry deep cultivation for a hundred years, to be O-RING KING!