Gas Struts

A gas strut, also known as a gas spring is a mechanical component that uses compressed nitrogen gas to force a precision rod attached to a piston back and forth within an enclosed metal cylinder. Gas struts are primarily designed as a direct support mechanism for safely lifting, positioning, lowering and counterbalancing different weights. For more information on how they work, you can consult our Gas Springs Guide.

How does a Gas Strut work?

A gas strut construction is very simple, it comprises of a precision rod attached to a piston and a central tubular body containing compressed nitrogen gas and lubricating oil. When force is applied to the protruding portion of the rod it presses onto the piston head a bit like a plunger on a syringe, compressing the nitrogen gas. This creates an internal pressure that exceeds the pressure outside of the cylinder closing the gas strut. When the force is removed from the external rod the gas is de-compressed and the pressure pushes the piston back out again, opening the gas strut.

Types of Gas Strut

Gas struts or gas springs are available as stop and stay or variable pressure with a steel or stainless steel body. Depending on application stroke length, extended length, minimum and maximum force ranges and end fittings must be taken into account.

Gas Strut sizes

Gas struts are usually referred to by their size, the most common are:

  • 6 mm rod diameter – 15 mm tube diameter. Range 50 - 400 N (11-90 lbs)
  • 8 mm rod diameter – 18 mm tube diameter. Range 100 - 650 N (22-146 lbs)
  • 10 mm rod diameter - 23 mm tube diameter. Range 150 – 1200 N (34-269 lbs)
  • 14 mm rod diameter – 28 mm tube diameter. Range 200 – 2500 N (45-562 lbs)

Gas struts are utilised in a wide range of applications. The most common use is for the gas spring is lifting and lowering of a car boot. Other areas include:

  • Boat access hatches
  • Cargo area on aeroplanes
  • boats
  • coaches
  • Office furniture and chairs
  • Skylights
  • Office chairs and furniture
  • Machine guards and Conveyor gates.

Larger gas struts are also used in industrial manufacturing such as tool pressing. The gas struts used in these areas have a force range capable of exerting up to forty tonnes.


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Description Price Locking & Holding Cylinder Material End Connector Material End Connector Extended Length Stroke Length Rod Diameter Piston Diameter Maximum Force Minimum Force
RS Stock No. 686-991
Mfr. Part No.SWY8060600058
TWD2,288.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 564mm 250mm 18mm 8mm 650N 100N
RS Stock No. 686-941
Mfr. Part No.SWV6050500035
TWD2,177.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 240mm 100mm 15mm 6mm 400N 50N
RS Stock No. 686-957
Mfr. Part No.SWV6050500036
TWD2,558.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 340mm 150mm 15mm 6mm 400N 50N
RS Stock No. 686-935
Mfr. Part No.SWV6050500034
TWD2,158.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 160mm 60mm 15mm 6mm 400N 50N
RS Stock No. 484-7229
Mfr. Part No.SXY8A6A600005
TWD4,815.00
1 Pair
Pair(s)
None Stainless Steel Nylon, Stainless Steel Ball & Socket Joint 664mm 300mm 18mm 8mm 650N 100N
RS Stock No. 687-039
Mfr. Part No.SWV4101000019
TWD4,536.00
1 Pair
Pair(s)
- Steel Steel Ball & Socket Joint, End Joint 680mm 300mm 28mm 14mm 2500N 200N
RS Stock No. 515-2229
Mfr. Part No.SWV1ECV100002
TWD3,845.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Steel, Zinc Ball & Socket Joint 665mm 300mm 23mm 10mm 1200N 150N
RS Stock No. 346-9547
Mfr. Part No.SXV6050500004
TWD4,739.00
1 Pair
Pair(s)
- Stainless Steel Nylon, Stainless Steel Ball & Socket Joint 440mm 200mm 15mm 6mm 400N 50N
RS Stock No. 253-324
Mfr. Part No.SXV4G6200275G6R
TWD14,218.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 480mm 200mm 28mm 14mm 2500N 200N
New
RS Stock No. 194-6521
Mfr. Part No.GS-B3-9050
TWD3,360.00
Each
units
Any Position Lock Steel - - 365mm 150mm 23mm 8mm 600N 100N
RS Stock No. 686-963
Mfr. Part No.SWY8060600055
TWD2,174.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 264mm 100mm 18mm 8mm 650N 100N
RS Stock No. 687-045
Mfr. Part No.SWV4101000020
TWD4,804.00
1 Pair
Pair(s)
- Steel Steel Ball & Socket Joint, End Joint 880mm 400mm 28mm 14mm 2500N 200N
RS Stock No. 202-2557
Mfr. Part No.SWV4ECV400001
TWD5,842.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Steel Ball & Socket Joint 480mm 200mm 28mm 14mm 2500N 200N
RS Stock No. 687-001
Mfr. Part No.SWV1080800028
TWD2,610.00
1 Pair
Pair(s)
- Steel Steel, Zinc Ball & Socket Joint, End Joint 445mm 200mm 23mm 10mm 1200N 150N
RS Stock No. 346-9553
Mfr. Part No.SXY1A8A800001
TWD7,094.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 245mm 100mm 23mm 10mm 1200N 150N
RS Stock No. 253-330
Mfr. Part No.SXV4101000009
TWD15,595.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 680mm 300mm 28mm 14mm 2500N 200N
New
RS Stock No. 194-6522
Mfr. Part No.GS-B3-9051
TWD3,565.00
Each
units
Any Position Lock Steel - - 165mm 50mm 28mm 10mm 1000N 150N
New
RS Stock No. 194-6524
Mfr. Part No.GS-B3-9053
TWD3,933.00
Each
units
Any Position Lock Steel - - 365mm 150mm 28mm 10mm 1000N 150N
RS Stock No. 484-7207
Mfr. Part No.SWV8ECV800005
TWD3,432.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Nylon, Steel Ball & Socket Joint 664mm 300mm 18mm 8mm 150N 100N
RS Stock No. 234-483
Mfr. Part No.SWV4101000021
TWD4,918.00
1 Pair
Pair(s)
- Steel Steel Ball & Socket Joint, End Joint 1080mm 500mm 28mm 14mm 2500N 200N