| Customization: | Available |
|---|---|
| Material: | NBR |
| Application: | Oil and Gas Industry |
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Hammer union seals are used in the connections between flexible hoses or pipes used in the oil drilling industry. The seal provides a critical fluid tight connection within the union hardware.
Hammer union seals consist of a thread end, a nut end, and a hammer nut that when tightened seal the assembly with the assistance of an elastomeric seal. The seal is lipped to prevent it from falling out when inverted.
With brass ring:The use of brass rings can increase the tightness of the seal, prevent leakage, and maintain stable performance in long-term use, extending the service life. In addition, the corrosion resistance of brass can also ensure that the sealing effect is maintained in various environments, especially in weak acids, weak alkalis and salt water.
With stainless ring:It has high corrosion resistance and can resist corrosion from weak corrosive media such as air, steam, water, and chemical substances such as acid, alkali, and salt. The strength and corrosion resistance of stainless steel vary with the alloy elements, and it has high heat resistance and wear resistance.
We offers Hammer Union Seals in Nitrile for standard service, FKM for increased temperature and chemical resistance or HNBR for Sour Gas Service or PTFE.
| 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 |
1" 1502, Buna / FKM/ HSN
1-1/2" 1502, Buna / FKM/ HSN
2" 1502, Buna / FKM/ HSN
3" 602/1502, Buna / FKM/ HSN(Brass/Stainless Anti-Ext)
4" 602/1002/1502, Buna / FKM/ HSN(Brass/Stainless Anti-Ext)
7'' 602/1002/1502, Buna / FKM/ HSN(Brass/Stainless Anti-Ext)
2" FIG 206, Buna / FKM/ HSN
3" FIG 206, Buna / FKM/ HSN
4" FIG 206, Buna / FKM/ HSN
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