Eleven lines. The parts that stop a job stalling.
Gauges, test points, seals, rings, level gauges, breathers and the Walform forming equipment. Small items with a large effect on whether a system commissions cleanly — specified on size, rating, material and standard.
The eleven lines we stock
Size, rating, material and standard on every card. On seals and breathers, the temperature range usually decides the choice rather than the size.
Forms the profile ring into the tube
Walform machines
Tube OD6–42 mm Cycle5–8 sec per tube end FunctionCold reshaping of hydraulic and stainless steel tube Pairs withDIN 2353 fittings and Walform tube Machine to order→
Removes debris before you commission
Stauff tube clean systems
Air supply87–145 PSI KitSC‑10UV‑K launcher with 10 universal nozzles ProjectilesStandard (S) · coupling (C) · abrasive (A) · grinding (G) UseLoose contaminants in hose, tube and pipe ends Ready stock→
EN 837-1
Pressure gauges
Size1 1/2" to 4" · 40 to 100 mm Pressureto 1000 bar MaterialStainless casing · brass bottom StandardEN 837‑1 Ready stock→
Take a reading without breaking the line
Stauff test couplings
Pressureto 630 bar Temperature−40 °C to +200 °C MaterialZinc‑nickel plated carbon steel · SS316 StandardDIN 2353 · ISO 8434‑1 Ready stock→
Holds the flange to the pipe
GS Hydro retain rings
Size1/2"–14" Pressureto 690 bar MaterialSS302 StandardISO 6162 · ISO 6164 Ready stock→
Metal ring bonded to rubber
GS Hydro bonded seals
Size1/2"–8" MaterialSS302 StandardISO 6162‑2 · ISO 6164 Use withSAE and ISO 6164 flanges Ready stock→
Choose on the medium, not the size
O-rings
StandardsJIS B2401 · AS568 SeriesG static · P dynamic · V vacuum CompoundsNBR · Viton FKM · EPDM · silicone Hardness70 Shore A · HS90 Ready stock→
Bonded washer for a threaded port
Dowty seals
Size1/8"–3" MaterialSS316 · steel SealsUnder a bolt head or a port fitting Order withThreaded fittings and adapters Ready stock→
See the oil level without opening the tank
Stauff level gauges
Size76–305 mm Tank pressure2 bar · 29 PSI Temperature−30 °C to +80 °C MaterialNBR or FPM seals · epoxy‑coated St 12 housing · polyamide sight tube Ready stock→
Fill port and air breather in one
Stauff filler breathers
Temperature−40 °C to +120 °C MaterialGlass‑fibre reinforced polyamide body and cap SealingNBR StandardISO 228 · ANSI B1.20.1 Ready stock→
Stops stainless galling on assembly
Anti Bloc Fett grease
UseAssembling SS316 couplings FunctionPrevents gripping and lowers the friction coefficient WhyStainless on stainless galls when torqued dry Order withSS316 fittings and couplings Ready stock→These are the items that get forgotten and then hold up a commissioning. A flange without its bonded seal, a port with no test point to read pressure from, a stainless coupling torqued dry without assembly grease and galled solid. Add them to the order with the fittings, not afterwards.
Getting the specification right
What actually decides each choice, and the four things we need in order to quote.
What decides the choice
- Seal material, not seal size — NBR handles mineral oil and water; Viton is for higher temperature and aggressive media. Getting this wrong is the usual cause of a seal that fails early.
- Flange seals come as a set — a bonded seal and a retain ring to ISO 6162‑2 or ISO 6164, matched to the flange you are using.
- Gauges are specified on range, then dial — to 700 bar, in 63 mm and 100 mm to EN 837‑1. Pick a range where the working pressure sits mid‑scale.
- Test points need planning in — Stauff test couplings to 630 bar let you read pressure without breaking the line. Fit them at commissioning, not after the first fault.
- Walform tube needs the machine — the profile ring is cold‑formed into the tube, so the forming machine and the tube are specified together.
What to send us
Four things and we can quote without going back and forth:
- What it fits — the flange, fitting, port or tank it goes on.
- Size — nominal size, thread, or dial diameter for a gauge.
- Medium and temperature — this is what decides NBR against Viton.
- Pressure — working, and peak if the circuit spikes.
Ordering flanges or fittings at the same time? Say so — we will match the seals to them rather than quoting them separately.
Catalogues
Fourteen accessory catalogues, grouped by what they cover. Direct PDF downloads — no form, no email address.
Seals and rings4 catalogues
Stauff service equipment7 catalogues
Walform and assembly3 catalogues
What is in them
- Dimensions and part numbers — per size, so a seal or a gauge can be ordered by number rather than described.
- Ratings — working pressure and temperature range, which on seals and breathers is the figure that actually decides the choice.
- Materials — NBR, Viton, polyamide, SS302, SS316 and coated steel, by part.
- Standards — EN 837‑1 for gauges, DIN 2353 / ISO 8434‑1 for test couplings, ISO 6162‑2 and ISO 6164 for rings and bonded seals, ISO 228 / ANSI B1.20.1 for breathers.
Before you download
- They open in a new tab. Nothing is gated: no form, no sign‑up, no email address.
- Dimensions and ratings are in the catalogue; stock and price are not. Send us the sizes and we will confirm both.
- Seals are cheap and cost a shutdown when they are missing — order them with the flange or fitting, not after it.
Send what it fits, the size and the medium.
One seal or a full commissioning list — priced by a product specialist within two working hours.