Stainless Steel Gas Struts — Standard, Custom & OEM Replacement from One Manufacturer
Excellent corrosion resistance
High-quality stainless steel gas struts provide reliable corrosion resistance and have passed a 144-hour salt spray test.
304 & 316L Stainless Steel
304 for general outdoor and industrial use; 316L for marine, saltwater, and frequent-cleaning environments.
Standard & Custom Options
Standard stainless steel gas springs are available, with custom sizes and logo branding offered to meet your equipment and installation requirements.
Professional Stainless Steel Gas Strut Manufacturer
Since 2006, GASTAC has been a professional manufacturer of stainless steel gas struts in China. We offer standard and custom models in 304 (EN 1.4301) and 316L (EN 1.4404 / ASTM A276-10) stainless steel, certified to ISO 9001, IATF 16949 and ROHS. Our Stainless Steel Gas Struts for Boat, Marine & Industrial provide controlled lifting and reliable support for engine hatches, deck lids, dock boxes and other equipment used in wet, saltwater or frequently cleaned environments. We also offer food-grade and medical-grade stainless steel products for milk tank lids, mobile food carts and medical sterile environments.
Stainless Steel Gas Spring Series
GASTAC manufactures stainless steel gas springs in four core series — 6-15, 8-18, 10-22 and 14-28 — covering rod diameters from 6 mm to 14 mm and tube diameters from 15 mm to 28 mm. Available in 304 or 316L stainless steel, each series is built for corrosion resistance and consistent performance in demanding environments. Extended lengths range from 155 mm to 1100 mm, with strokes from 45 mm to 505 mm and force ratings from 50 N to 2200 N. Thread sizes include M6×1.0, M8×1.25 and M10×1.5. Custom lengths, force ratings and end fittings are available for OEM and ODM projects.
Need a size, force rating or end fitting that is not listed above? Send us your drawing, sample photo or part number, and our sales team will confirm the specification and quotation. Contact our sales team. For complete specifications, download the GASTAC Gas Spring & End Fitting Catalog (6-15, 8-18, 10-22 and 14-28 series in stainless steel and carbon steel, plus protective sleeves and end fixings, including thread size, bore, thickness and center distance). All dimensions in mm.
Popular Stainless Gas Struts Products
Stainless Steel Gas Spring Testing & Performance
Stainless steel gas springs must withstand moisture, temperature swings and repeated cycling. GASTAC uses 316L stainless steel components and multi-lip sealing, with performance verified through salt spray, temperature and fatigue testing. The sections below summarize the key testing and performance characteristics.
Corrosion Testing
- Salt spray testing to ASTM B117 / ISO 9227
- 316-grade cylinder tube and 316-grade piston rod
Temperature Range
- Standard operating range: −30 °C to 80 °C
- Up to 200 °C with upgraded high-quality seal material
Food-Grade Oil & Sealing System (Optional)
- FDA-certified food-grade oil filling available on request
- Multi-lip internal seal with bronze bushing
Fatigue Testing
- 200 mm stroke stainless steel gas spring, 180 mm test stroke
- 6-hour static hold at 20 °C before testing
- 8 cycles per minute, 100,000 cycles total
Low Magnetic Signature
- 316L stainless steel offers low magnetic permeability
- Suitable for magnetically sensitive environments
Scraper & Safety Locking Sleeve
- Scraper ring removes dirt and debris from the piston rod to protect the internal seal.
- Safety locking sleeve secures the spring at full extension and releases by thumb pressure.
What are Stainless Steel Gas Springs?
Stainless steel gas springs are sealed, nitrogen-filled struts that provide smooth lifting, lowering, and support for moving parts.
They offer better corrosion resistance than standard carbon steel gas springs, making them suitable for marine, food-processing, medical, outdoor, and industrial applications.
What Is the Difference Between 304 and 316L Stainless Gas Struts?
For stainless gas struts used in marine, coastal, food-processing, or medical environments, material selection directly affects corrosion resistance and service life. The table below compares 304 and 316L stainless steel for common application conditions.
| Feature | 304 Stainless Steel | 316L Stainless Steel (GASTAC Standard Range) |
|---|---|---|
| Molybdenum Content | None | About 2%, helping improve corrosion resistance |
| Saltwater Resistance | Limited; risk of pitting in marine environments | High; suitable for marine-grade applications |
| Chemical Resistance | Moderate | Excellent against chlorides and harsh environments |
| Ideal Applications | Indoor furniture, kitchens, and general equipment | Boats, food plants, medical equipment, and coastal use |
316L Stainless Steel Gas Shocks
316L stainless gas shocks are engineered for maximum corrosion resistance, making them the top choice for marine, coastal, chemical, and medical environments. With enhanced durability against saltwater, chemicals, and harsh conditions, they deliver extended service life and reliable performance even in the toughest applications. For industries where safety and longevity are critical, 316L offers unmatched quality.
304 Stainless Steel Gas Shocks
304 stainless gas shocks provide an excellent balance of performance and cost-effectiveness. With strong resistance to everyday rust and oxidation, they are widely used in outdoor equipment, industrial machinery, and food-grade applications. Their durability and hygienic properties make them ideal for environments that require cleanliness and reliability, while offering an economical choice for most standard projects.
Marine Gas Strut OEM Cross Reference
GASTAC stainless steel gas struts are cross-referenced against common marine and industrial brands, so you can match an existing part number or use the standard series dimensions directly. The table below lists Lift Easy cross references for each series. Attwood and Ameritool cross references are also available, along with the full standard range for direct purchase. For other brand cross references or to buy standard sizes directly, visit the GASTAC Stainless Steel Gas Spring Online Store .
6-15 Stainless Steel Gas Springs Size Chart
| GASTAC Code | Stroke Length (mm) | Extended Length (mm) | Compressed Length C (mm) | Rod/Body Diameter (mm) | Force Range F1 (N) | Lift Easy Cross Reference |
|---|---|---|---|---|---|---|
| GTS61515550 | 40 | 155 | 115 | 6/15 | 50-400 | GSSK15-155/050N |
| GTS61519550 | 60 | 225 | 165 | 6/15 | 50-400 | GSSK15-195/050N |
| GTS61523550 | 80 | 235 | 155 | 6/15 | 50-400 | GSSK15-235/050N |
| GTS61525550 | 80 | 255 | 175 | 6/15 | 50-400 | GSSK15-255/050N |
| GTS61527550 | 100 | 275 | 175 | 6/15 | 50-400 | GSSK15-275/050N |
| GTS61531550 | 120 | 315 | 195 | 6/15 | 50-400 | GSSK15-315/050N |
| GTS61533050 | 125 | 330 | 205 | 6/15 | 50-400 | GSSK15-330/050N |
| GTS61537550 | 150 | 375 | 225 | 6/15 | 50-400 | GSSK15-375/050N |
| GTS61539050 | 160 | 390 | 230 | 6/15 | 50-400 | GSSK15-390/050N |
| GTS61543050 | 175 | 430 | 255 | 6/15 | 50-400 | GSSK15-430/050N |
| GTS61550550 | 210 | 505 | 295 | 6/15 | 50-400 | GSSK15-505/050N |
8-18 Stainless Steel Gas Springs Size Chart
The 8-18 stainless steel gas springs feature an 8mm rod diameter and 18mm body diameter. The diagram below illustrates the key measurements, including extended length, compressed length, stroke, rod diameter, body diameter, and end fitting dimensions.
| GASTAC Code | Stroke Length (mm) | Extended Length (mm) | Compressed Length C (mm) | Rod/Body Diameter (mm) | Force Range F1 (N) | Lift Easy Cross Reference |
|---|---|---|---|---|---|---|
| GTS818310700 | 120 | 310 | 190 | 8/18 | 100-700 | GSSK18-310/100N |
| GTS818390700 | 160 | 390 | 230 | 8/18 | 100-700 | GSSK18-390/100N |
| GTS818410700 | 170 | 410 | 240 | 8/18 | 100-700 | GSSK18-410/100N |
| GTS818510700 | 215 | 510 | 295 | 8/18 | 100-700 | GSSK18-510/100N |
| GTS818525700 | 225 | 525 | 300 | 8/18 | 100-700 | GSSK18-525/100N |
| GTS818585700 | 255 | 585 | 330 | 8/18 | 100-700 | GSSK18-585100N |
| GTS818610700 | 265 | 610 | 345 | 8/18 | 100-700 | GSSK18-610/100N |
| GTS818630700 | 280 | 630 | 350 | 8/18 | 100-700 | GSSK18-630/100N |
| GTS818710700 | 315 | 710 | 395 | 8/18 | 100-700 | GSSK18-710/100N |
10-22 Stainless Steel Gas Springs Size Chart
The 10-22 stainless steel gas springs feature a 10mm rod diameter and 22mm body diameter. The diagram below illustrates the key measurements, including extended length, compressed length, stroke, rod diameter, body diameter, and end fitting dimensions.
| GASTAC Code | Stroke Length (mm) | Extended Length (mm) | Compressed Length C (mm) | Rod/Body Diameter (mm) | Force Range F1 (N) | Lift Easy Cross Reference |
| GTS10225851100 | 255 | 585 | 330 | 10/22 | 100-1100 | GSSK22-585/100N |
| GTS10227001100 | 305 | 700 | 395 | 10/22 | 100-1100 | GSSK22-700/100N |
| GTS10227101100 | 305 | 710 | 405 | 10/22 | 100-1100 | GSSK22-710/100N |
| GTS10228201100 | 360 | 820 | 460 | 10/22 | 100-1100 | GSSK22-820/100N |
14-28 Stainless Steel Gas Springs Size Chart
The 14-28 stainless steel gas springs feature a 14mm rod diameter and 28mm body diameter. The diagram below illustrates the key measurements, including extended length, compressed length, stroke, rod diameter, body diameter, and end fitting dimensions.
GASTAC Code
Stroke Length (mm)
Extended Length (mm)
Compressed Length C (mm)
Rod/Body Diameter (mm)
Force Range F1 (N)
Lift Easy Cross Reference
GTS142811002000
500
1100
600
14/28
100-2000
GSSK28-1100/100N
GTS142812002000
545
1200
655
14/28
100-2000
GSSK28-1200/100N
Attwood Stainless Steel Gas Springs Cross Reference
| Gastac Product Code | Expanded Length: | Compressed Length | Stroke | Force （lbs） |
Attwood Cross Reference |
|---|---|---|---|---|---|
| GTS25420 | 10″ | 7″ | 3″ | 20 | ST30205 |
| GTS25440 | 10″ | 7″ | 3″ | 40 | ST30405 |
| GTS19020 | 7.5″ | 5.25″ | 2.25″ | 20 | ST31205 |
| GTS26630 | 10.5″ | 7.5″ | 3″ | 30 | ST32305 |
| GTS38120 | 15″ | 9.5″ | 5.5″ | 20 | ST33205 |
| GTS38140 | 15″ | 9.5″ | 5.5″ | 40 | ST33405 |
| GTS38160 | 15″ | 9.5″ | 5.5″ | 60 | ST33605 |
| GTS508120 | 20″ | 12″ | 8″ | 120 | ST341205 |
| GTS50820 | 20″ | 12″ | 8″ | 20 | ST34205 |
| GTS50830 | 20″ | 12″ | 8″ | 30 | ST34305 |
| GTS50840 | 20″ | 12″ | 8″ | 40 | ST34405 |
| GTS50880 | 20″ | 12″ | 8″ | 80 | ST34805 |
| GTS50890 | 20″ | 12″ | 8″ | 90 | ST34905 |
| GTS30540 | 12.04″ | 8.46″ | 3.58″ | 40 | ST35405 |
| GTS30550 | 12.04″ | 8.46″ | 3.58″ | 50 | ST35505 |
| GTS43640 | 17.2″ | 10.2″ | 7″ | 40 | ST36405 |
| GTS43670 | 17.2″ | 10.2″ | 7″ | 70 | ST36705 |
| GTS43690 | 17.2″ | 10.2″ | 7″ | 90 | ST36905 |
Boat Outfitters Stainless Steel Gas Springs Cross Reference
| Gastac Product Code | Expanded Length: | Compressed Length | Stroke | Force （lbs） |
Boat Outfitters Cross Reference |
|---|---|---|---|---|---|
| GTS508100 | 20″ | 12″ | 8″ | 20-100 | 260-2486 |
| GTS30560 | 12″ | 8″ | 4″ | 20-60 | 060-3547-CP |
| GTS43660 | 17.20″ | 10.20″ | 7″ | 20-60 | 260-1679-CP |
| GTS19030 | 7.5″ | 5.5″ | 2″ | 5-30 | 060-3586-CP |
| GTS58460 | 23″ | 13″ | 10″ | 90 | 060-3633 |
| GTS47060 | 18.5″ | 11.25″ | 7.25″ | 20-60 | 060-3570-CP |
| GTS66620 | 26.25″ | 14.7″ | 11.55″ | 20 | 060-3698 |
Stainless Steel Gas Shock Applications
Marine Industry
Stainless steel gas shocks for boats and yachts are exposed to saltwater, humidity and constant movement. GASTAC uses 316L stainless steel for these conditions, with 144-hour salt spray testing to verify corrosion resistance. Typical mounting points include engine hatches, deck lids, storage compartments, access doors and cabin windows.
- 316L stainless steel for saltwater and coastal environments
- Corrosion tested to 144 hours of salt spray
- Common forces range from 100 N to 1200 N for marine lids and hatches
Food Safety
Food processing equipment is cleaned frequently and exposed to moisture and cleaning agents. Stainless steel gas struts with smooth surfaces and sealed construction are easier to wipe down and less likely to trap residue. FDA-certified food-grade oil filling is available as an option for food-contact-sensitive environments.
- Smooth stainless surface for easier cleaning
- Multi-lip internal seal to protect against moisture ingress
- Optional FDA-certified food-grade oil filling
Medical Equipment
Medical equipment such as hospital beds, treatment tables and diagnostic devices requires stable, predictable force and cleanable surfaces. Stainless steel gas struts provide consistent lift and support, while 316L construction supports frequent cleaning and disinfection.
- Stable force output for positioning and support
- 316L stainless steel for frequent cleaning
- Optional low magnetic signature for sensitive environments
Gas Spring End Fittings
DR001
YY001
QT001
ZDT001
End fittings are available with standard thread sizes including M6×1.0, M8×1.25 and M10×1.5, matched to the rod and tube diameter of each gas spring series. Custom thread sizes and fitting combinations are available for OEM and ODM projects. For example, YY001 M8 size uses an 8 mm thread with an 8 mm bore, 12 mm thickness and 36 mm center distance, while DR001 M8 size uses an 8 mm thread with an 8 mm bore, 5 mm thickness and 20 mm center distance. If you need different dimensions or other fitting types, please contact GASTAC sales team .
