


Union seals are made from high-performance materials like rubber and elastomers that can endure extreme conditions.They are widely used in the oil, gas, and chemicalindustries to ensurereliability under extreme conditions.
Size | 1" 1.5" 2" 3" 4" 6" 7" |
Material | Buna/FKM/HNBR/PTFE/PU |
Types | rubber/rubber+brass back-up/rubber+ss back-up |
Application | oil gas and chemical industries, oil exploration, drilling operations, chemical pipeline systems |
Feature | high-pressure and high-temperature resistant,chemical corrosion resistance |

Material name | Temperature range | Advantage | Deficiency |
NBR (Buna/Nitrile) | -40ºC to 120ºC -40ºF to 248ºF | 1.Presently the most widely used rubber in the seal industry 2.Exceptional balance of good mechanical properties, wear properties, and chemical resistance 3.Resistance to most mineral oils and greases | don't used with gly-based brake fluids and strong acids |
HNBR (HSN/ Hydrogenated Nitrile) | -40ºC to 160ºC -40ºF to 320ºF | 1.Chemical resistance 2.Wider temperature range than standard nitrile 3.High strength material that resists extrusion, abrasion, wear 4.Water and steam resistance to +149ºC(+300ºF) 5.H2S resistance up to 10% 6.Commonly used with petroleum oils and co2 | don't use with chlorinated hydrocarbons, polar solvents, or strong acids |
FKM (Fluorocarbon) | -26ºC to 230ºC -15ºF to 446ºF | 1.Excellent resistance to higher temperature, petroleum, and gas oline 2.Good chemical resistance, including to refrigerants(R12) 3.Great mechanical properties are retained over a wide temperature range 4.Commonly used with Am monia | Poor resistance to aromatic hydrocarbons, polar solvents, and to luene |
PTFE (Plyetrafuoroethylene) | -268ºC to 250ºC -450ºF to 483ºF | Vitually universal chemical resistance | High cost, relatively low mechanical strength, machining difficulty |
What we Shanghai Qinuo Industry Provide:
More pictures of our custom rubber products for reference:
Corner View of our factory:



Our Service capability:
Customized services | Plastic & Rubber bonding | Mold Design | ||||||
Customized extrusion | Extrusion and bonded gaskets | Mold Production | ||||||
Injection Molding | Self Adhesive rubber profile | Customized Package | ||||||
Sheet Cutting | Rubber Complex Intake Hose | Problem Solving | ||||||
Standard Size extrusion | Reinforced rubber tubes | Assembly | ||||||
Special Compound design | Rubber Solution Suggestion | Sourcing | ||||||
Rubber& Metal bonding |
FAQ:
Q1: What is Hammer Union Seal?
A1: Hammer union seal, produced by SHQN, is a kind of sealing device used for pipeline connection, whose model number is Hammer union seals which is made in China.
Q2: What is the packaging of Hammer Union Seal?
A2: The packaging of Hammer Union Seal can be customized or standard packing.
Q3: What is the delivery time of Hammer Union Seal?
A3: The delivery time of Hammer Union Seal is about 15 days.
Q4: What is the material of Hammer Union Seal?
A4: Hammer Union Seal is made of high quality rubber compounds.
Q5: Are you manufacture or trading company?
We are manufacture. Our factory located in Haimen District, Nantong City, Jiangsu Province.