Welding Industrial Hoses | Parker | SIAMEEZ® GRADE T Twin Line Welding Hose (Red - Fuel Gas Line; Green - Oxygen Line) | 7109 Series


Series 7109 is a premium twin line welding hose featuring a flame resistant and oil resistant tube and cover. The red line is compatible with commonly used fuel gases, including acetylene, hydrogen, natural gas, propane and propylene, and the green line is compatible with oxygen. The non-blooming tube minimizes the migration of combustible waxes or plasticizers to the surface of the rubber, and the multiple plies of textile reinforcement provide flexibility. The cover is resistant to abrasion, flame, mild chemicals, oil and ozone. Series 7109 is also available in factory-fabricated and tested hose assemblies in popular configurations. Grade T is the only grade of welding hose recognized by the Compressed Gas Association (CGA) for oxy-fuel gas welding applications.

TUBE Black chloroprene
REINFORCEMENT Multiple textile plies

Green (oxygen) or red (fuel) chloroprene; smooth finish


-40°F to 200°F (-40°C to 93°C)

  • Red: Acetylene, hydrogen, natural gas, propane, propylene
  • Green: Oxygen
  • Bending, brazing, cutting, fabricating, gouging, joining, piercing, pre-heating, post-heating, severing, soldering, straightening, surfacing, trimming
  • Assembly and fabrication shops, construction, factories, foundries, mines, oil rigs, plumbing, rail yards, salvage, scrapyards, shipyards, steel mills
VACUUM Not recommended
COMPARE TO Thermoid Tuline Grade T; Veyance Gemini Twinline Grade T
PACKAGING Reels; fitted hose assemblies shrink-wrapped and labeled in master cartons

Part #

ID (in) Reinf Plies
OD (in) Min Bend Rad (in) Max Rec WP (psi)
7109-191 3/16 2 0.438 2.0 200
7109-251 1/4 2 0.531 2.5 200
7109-311 5/16 2 0.594 3.0 200
7109-381 3/8 2 0.656 4.0 200
*Couplings: Bulk welding hose couplings are not sold separatedly by Parker.

Grade T Fitted Hose Assemblies with Steel Spring Guard Each End

Part #

ID (in) Length (ft)
Nut Sizes
Std Pack Qty
7109NLF-300SG 1/4 25 B & B 10
7109NLF-600SG 1/4 50 B & B 5
7109NLF-1200SG 1/4 100 B & B



How to Order