Hammer Union Seals with Brass or Stainless Steel Backing — Sour-Service Requirements

Hammer Union seals:

Backed hammer union seals are used in matching hose or pipe connections in oilfield flow lines. The elastomer provides sealing contact and the brass or stainless steel support helps control extrusion at the designed clearance. Match the seal profile, backing dimensions and material grade to the union assembly drawing.
Confirm the connection manufacturer, figure and assembly instructions before selecting a replacement. Lip geometry and retention features vary with union design; a seal from another connection must not be assumed interchangeable. Inspect the union seat and support surfaces before installation.
Provide the nominal connection size and actual seal dimensions. Different figures may use a lip seal or an O-ring, so identify the sealing arrangement from the original drawing or part reference.
For sour-service enquiries, provide H2S and CO2 composition, pressure, temperature, fluid chemistry and decompression conditions. FKM or HNBR material names alone do not establish sour-gas qualification. Specify required compound test evidence and backing-metal requirements; brass or stainless steel suitability depends on the exact grade and service environment. The seal does not establish the pressure rating of the union assembly.

What we Shanghai Qinuo Industry Provide:

Rubber O rings

• Rubber O rings -As568 series rubber o rings/JB standard rubber o rings.
• Encapsulated rubber o rings- silicone/ FKM rubber o rings
• PTFE coating rubber o rings-kinds of color rubber o rings

Hammer Union seals- 1" 1.5" 2 3" 4" 6" 7"

• Rubber hammer union seals-Buna/FKM/HNBR rubber type
• Rubber w/brass or stainless steel back up types

Swab cups

• V types 4" 5.5" ect.
• TA type
• MV type
• NUF type
• TUF type

​

Rubber seal kits- custom packing or lable is available

• #10 setting tool - With burst disk
• #20 setting tool - With burst disk
• AP Compact Setting Tool Kit
• Grease Tubes Seal Kit
• 3 1/2” Shorty Kits
• 3 - 1/8" Weight Bar Kit
• #10 Baker Firing Head Kit
• #20 Firing Head Kit
• #20 BP3.SEC kits
• #10 BP3.SEC kits
• T-BRT redress kit
• T-1 Set
• GC Stripper Head Redress Kits

Wireline Component Parts:

1) Pressure Relief Disc, ZD Plated (application:rupture(bleeder) Disc)

2) Rubber Push Pin -black

3) Nylon Push Pin -natural

4) Retainer Nut, Steel, ZD Plated (Flat, beveled also available) (application: retainer nut)

5) Threaded Steel Plug, w/ Lathe Cut (application:5" port plug)

6) Threaded Brass Plug (application: setting tool plug )

More pictures of our products for reference:

Corner View of our factory:

Our Service capability:

FAQ: