GREENSEAL PRO 180 —
the general-purpose sheet most standard-duty jobs start with
Water. Heating circuits. Glycols. Oils. Alcohols. Food-contact duties. GREENSEAL PRO 180 is the green general-purpose gasket for clean flat faces and standard service conditions. It is not the specialist. It is the baseline that keeps most routine jobs simple.
Selection rule: Start with GREENSEAL unless the medium, face condition or temperature tells you not to.
Use this when: standard heating, water, glycol, alcohol, documented food-contact and general industrial duties on clean flat faces within the product envelope.
Do not use this when: do not force it into gas, oxygen, aggressive chemical, damaged-face or high-temperature jobs just because the size fits.
Move away from GREENSEAL when: approval, temperature, medium compatibility or face condition becomes the real design driver.
Quick selection: If the service is standard, the face is sound and continuous temperature stays within the working range, GREENSEAL is usually the first Kinetics Line material to check. If gas, oxygen, aggressive chemicals, worn faces or higher continuous temperatures enter the job, the specification moves elsewhere.
What it is
GREENSEAL PRO 180
GREENSEAL PRO 180 is a non-asbestos jointing sheet based on cellulose and synthetic fibres with inorganic fillers, bonded in an NBR binder matrix. It is the general-purpose gasket in the Kinetics Line range — designed for the applications that make up the majority of heating and plumbing work: water, heating circuits, thermo-hydraulic systems, food and beverage, and general industrial piping at standard operating conditions.
It is not the highest-temperature gasket in the range, not the most chemically resistant, and not the softest. It does not need to be. If the faces are clean, the medium is ordinary heating or water service, and the temperature is inside range, this is usually the first gasket to try.
The most important number: 140°C continuous. The peak rating is 180°C but continuous operating limit is 140°C. Standard domestic central heating runs at 60 to 80°C. Commercial heating rarely exceeds 120°C continuously. GREENSEAL covers a large share of heating and plumbing applications with significant margin. Above 140°C continuous — move to aramid.
What it seals — broader than most people expect
Most installers know GREENSEAL for water and heating. The approved media range is wider than that.
Potable water
Heating circuits
Oils & lubricants
Glycols
Alcohols
Food contact (FDA)
Steam to 120°C
General industrial
Glycol coverage matters in practice — many underfloor heating systems and unoccupied property heating circuits run on glycol-water mixes. GREENSEAL handles standard glycol concentrations at normal heating temperatures. For unusual glycol concentrations or very high dosing, verify against the datasheet before specifying.
Oil and alcohol coverage opens GREENSEAL to thermo-hydraulic and food processing applications that many people would assume require a specialist material. FDA approval confirms it for food-contact use in the US market. KTW covers drinking water in Germany.
Where it goes — joint by joint
The most common application. Standard condensing boilers run at 60 to 85°C — well within GREENSEAL's continuous rating. New gasket every time the joint is opened. The face needs to be clean before the gasket goes in.
Pump flanges on standard domestic and commercial heating systems. Good face condition, standard bolt load — GREENSEAL is usually the correct first choice. If the pump flange is worn or the face is scored, consider FLEXSEAL PRO 350 instead.
Standard BSP threaded connections on heating systems. Hand-tight first, then firm seating with two spanners. GREENSEAL seals reliably at heating system temperatures with standard tightening — does not require high bolt load.
UFH systems typically run at 35 to 55°C — comfortably within the continuous rating. Standard glycol-water mixes at normal UFH concentrations are within the approved media range.
Potable water, cold water distribution, general plumbing. FDA 21 CFR/175.300 approval for food contact use in the US market. KTW covers drinking water in Germany.
Specifically noted in the TDS as a design application — thermo-hydraulic flanges where bolt load is limited by the fitting geometry. GREENSEAL's 9% compressibility gives adequate conformance at moderate bolt loads without requiring the high compressibility of FLEXSEAL.
The approvals
FDA 21 CFR/175.300 and KTW make GREENSEAL relevant beyond standard heating and plumbing — food contact applications and drinking water distribution all require material approvals that GREENSEAL carries.
Who uses it
Heating engineers and plumbers
The everyday gasket for domestic and commercial heating work. Boiler connections, pump flanges, radiator valves, manifold connections — GREENSEAL is usually the correct first choice where the face condition, medium and temperature stay within standard duty.
Contractors and M&E
High-volume heating and plumbing work where a reliable all-rounder reduces material complexity. One approved general-purpose gasket that covers the majority of standard applications without needing to specify different materials per joint.
Food and beverage industry
FDA approval opens GREENSEAL to food processing and beverage production applications — water and glycol circuits in food-contact environments where material certification is required.
General industrial MRO
Maintenance and replacement across general industrial pipework at standard temperatures and pressures. The correct choice when the medium is water, oils, glycols or alcohols and the temperature is within the continuous rating.
When to use it — and when the answer is a different colour
Green is correct when
- Standard heating circuits at normal operating temperatures
- Potable water and general water service
- Oils, glycols and alcohols within the temperature rating
- Food contact applications — FDA or KTW approval required
- Clean, flat mating faces with adequate bolt load
- General industrial pipework at standard conditions
- General thermo-hydraulic and industrial systems at standard temperatures
- Any application where the medium and temperature are standard and the face is in good condition
Choose a different colour when
- Temperature exceeds 140°C continuous — consider an aramid-based series such as BLUESEAL ULTRA 350
- Gas service changes the approval requirement — usually moves the job toward BLUESEAL ULTRA 350
- Oxygen-documented duty changes the specification completely — match against BAM-approved material such as GRAPHITESEAL ULTRA 350
- Worn or uneven mating face — use FLEXSEAL PRO 350
- Very low bolt load with problematic face — use FLEXSEAL PRO 350
- Potable water only, maximum purity required — consider REDSEAL PRO 110
The simple rule: if the temperature is standard, the face is clean and the medium is water, heating fluid, oil, glycol or alcohol — green is usually where the correct answer starts. The moment gas, oxygen, chemicals or continuous temperatures above 140°C enter the specification, the answer changes colour.
Practical notes
GREENSEAL PRO 180 carries anti-stick treatment on one side — confirmed in the technical datasheet. Position the anti-stick face against the mating face that is harder to clean at the next service interval. At removal, the treated face lifts away more cleanly. The face still requires inspection and cleaning before the replacement gasket goes in.
Technical specifications are based on 2.0 mm thickness, which is the standard reference in the supplied technical documentation. For most heating and plumbing BSP fittings, 2.0 mm is the typical working thickness. Other thicknesses may be available depending on supply programme — confirm at point of order.
180°C is the short-term peak rating. 140°C is the continuous operating limit. The distinction matters: a boiler that is rated to 90°C output does not continuously run at 90°C, but the flange connection sees every temperature excursion. Specify for the continuous operating temperature of the system, not the boiler output rating or the peak figure.
A GREENSEAL gasket that has been under load and temperature in service has already compressed and taken a permanent set. It will not reseal reliably when the joint is closed again. This is not a limitation of the material — it is how all compressed fibre gaskets behave. As a maintenance rule, the gasket should normally be replaced every time a joint is opened.
Sizes and packaging
| BSP size | Dimensions (mm) | SKU 25 pcs | SKU 100 pcs |
|---|---|---|---|
| 1/4″ | 10.7 × 6 × 2 mm | B-2014GES54-25 | B-2014GES54-100 |
| 3/8″ | 14.5 × 9 × 2 mm | B-2014GES01-25 | B-2014GES01-100 |
| 3/8″ Reduced | 13.5 × 8.5 × 2 mm | B-2014GES01F-25 | B-2014GES01F-100 |
| 1/2″ | 18.5 × 11 × 2 mm | B-2014GES02-25 | B-2014GES02-100 |
| 3/4″ Special | 24 × 16 × 2 mm | B-2014GES04-25 | B-2014GES04-100 |
| 3/4″ Normal | 24 × 18 × 2 mm | B-2014GES04A-25 | B-2014GES04A-100 |
| 3/4″ Special | 24 × 16 × 3 mm | B-2014GES04B-25 | B-2014GES04B-100 |
| 1″ Normal | 30 × 24 × 2 mm | B-2014GES05-25 | B-2014GES05-100 |
| 1″ Special | 30 × 21 × 2 mm | B-2014GES06-25 | B-2014GES06-100 |
| 1¼″ | 39 × 30 × 2 mm | B-2014GES07-25 | B-2014GES07-100 |
| 1½″ | 44.5 × 36 × 2 mm | B-2014GES08-25 | B-2014GES08-100 |
| 2″ | 56 × 43.5 × 2 mm | B-2014GES09-25 | B-2014GES09-100 |
| 2½″ | 61.5 × 47 × 2 mm | B-2014GES09A-25 | B-2014GES09A-100 |
| Box set — 320 pcs — 3/8″ to 1″, 6 sizes | B-2014BOX1 | ||
Custom dimensions and non-standard sizes available on request through B2B contact.
Most heating and plumbing jobs need a reliable all-rounder, not a specialist. GREENSEAL PRO 180 is that gasket.
Water, heating, oils, glycols, alcohols, food-contact assessment and standard industrial pipework — all within the documented medium, temperature and pressure scope. FDA documentation and KTW/UBA references support the regulated-use checks.
When the temperature goes above 140°C continuous, the medium becomes gas or chemicals, or the face is the problem — the answer changes. Until then, GREENSEAL remains the usual first check for standard-duty work.