GREENSEAL PRO 180 —
a cellulose/NBR sheet for verified standard-duty service
GREENSEAL PRO 180 is a cellulose/NBR grade to assess for compatible water, heating, glycol, oil and alcohol duties on clean, serviceable faces. Food or drinking-water use depends on the current batch-linked declaration, contact conditions and market requirement.
Documentation scope: Approval, compliance and certification references apply to the documented material grade, supplier certificate or listing, and stated test conditions unless a product-specific certificate says otherwise. A cut gasket size is not automatically certified as a separate product just because it is made from a documented material. For regulated applications, confirm the current certificate or listing scope, exact grade, medium, temperature, pressure and market requirement before specifying.
Selection rule: verify the exact medium, temperature, pressure, documentation, face condition and available seating load before selecting GREENSEAL.
Use this when: standard heating, water, compatible glycol or alcohol service, and duties where the cited supplier declaration actually covers the intended contact conditions.
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: On a sound face, GREENSEAL can remain on the shortlist only when the exact medium, continuous temperature, pressure and required documentation fit the supplied grade. Gas, oxygen, aggressive chemicals, higher temperatures or an unacceptable face require a different verified route.
What it is
GREENSEAL PRO 180
Source boundary: the technical-data source set used for this article contains one fuller mapped grade sheet reporting 180°C peak, 140°C continuous, 120°C with steam and 40 bar, plus a shorter current branded sheet that repeats only the 180°C short-term value. Confirm supplied-batch traceability and the current document before limit or regulated service; pressure and temperature maxima are not simultaneous.
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 for water, heating circuits and compatible thermo-hydraulic or industrial media at standard operating conditions. Food or drinking-water use still depends on the exact declaration, contact conditions and market requirement.
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. For compatible heating or water service on an acceptable face, it is a practical grade to verify against the exact joint and current documentation.
Temperature boundary: the fuller mapped technical sheet reports 180°C peak, 140°C continuous and 120°C continuous with steam. These are material limits under the stated source conditions, not a joint rating. Verify supplied-grade traceability and use the pressure-temperature diagram before working near a limit.
What it seals — broader than most people expect
Most installers know GREENSEAL for water and heating. The documented media range is wider than that.
Water-contact use
Heating circuits
Oils & lubricants
Glycols
Alcohols
Food-contact assessment*
Steam to 120°C
General industrial
Glycol-water circuits are a common use case, but "glycol" is not one fixed medium. Confirm glycol type, concentration, additives and temperature against current compatibility data before specifying.
The supplier sheet lists water, oils, alcohols and glycols as media, but suitability still depends on the exact fluid and conditions. It also cites FDA 21 CFR 175.300 and KTW; neither reference is a blanket food or drinking-water approval for every cut gasket, market or use.
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.
For pump flanges in compatible heating service, verify the OEM or joint specification, face acceptance and available seating load before selecting the grade. A worn, scored or out-of-flat face is assessed and repaired as required; it is not routed automatically to a softer gasket.
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.
Underfloor-heating temperatures are normally far below the published material limit, but glycol type, concentration, inhibitor package and temperature still need a compatibility check for the actual circuit.
Water, cold-water distribution and general plumbing where the exact grade and documentation scope match the project. the supplier's FDA 21 CFR 175.300 and KTW references must be checked against the intended use, while current German BWGL/UBA requirements must be confirmed separately. GREENSEAL is not the UK WRAS-listed choice.
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
The supplier sheet cites FDA 21 CFR 175.300 and KTW. Before food or drinking-water use, confirm that the current batch-linked declaration, intended contact conditions and market framework cover the application; UK WRAS is a separate requirement and is not listed for this grade.
Who uses it
Heating engineers and plumbers
A candidate for compatible domestic and commercial heating-water joints where the equipment specification, face condition, operating envelope and current material documentation all match.
Contractors and M&E
High-volume work can benefit from a well-documented standard-duty grade, but each joint still needs the correct size, thickness, medium compatibility, temperature-pressure check and required declaration.
Food and beverage industry
For food or beverage equipment, treat the cited FDA section as a document to assess, not permission by itself. Confirm the actual contact medium, migration/use conditions, supplied batch and customer requirement.
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
- General water service and drinking-water applications where the exact documentation scope fits the market requirement
- Oils, glycols and alcohols within the temperature rating
- Food or drinking-water duties only where the current batch-linked declaration and market requirement match the intended use
- Clean, flat mating faces with adequate bolt load
- General industrial pipework at standard conditions
- General thermo-hydraulic and industrial systems at standard temperatures
- Documented compatible service where the exact medium, operating envelope, joint geometry and supplied material grade have all been verified
Choose a different colour when
- Temperature exceeds 140°C continuous — consider an aramid-based series such as BLUESEAL ULTRA 350
- Gas service — use only the exact seal and current gas-service documentation required by the fitting, equipment, project and jurisdiction; BLUESEAL ULTRA 350 is one material to assess, not an automatic substitution
- Oxygen duty — compare the current BAM report scope and joint limits for candidates such as BLUESEAL ULTRA 350 and GRAPHITESEAL ULTRA 350; oxygen documentation alone does not choose between them
- Worn or uneven mating face — use FLEXSEAL PRO 350
- Very low bolt load with problematic face — use FLEXSEAL PRO 350
- Potable-water duty — verify the current declaration or listing, temperature, contact conditions and exact product scope; do not infer suitability or purity from gasket colour
Practical screen: keep GREENSEAL on the shortlist only when the supplied grade's medium, continuous-temperature, pressure and documentation scope fit the joint. Gas, oxygen, aggressive chemicals or higher temperatures trigger a fresh material and document review, not a colour shortcut.
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 normal behaviour for compressed fibre sheet gaskets after service loading and exposure. 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 |
| 11/4″ | 39 × 30 × 2 mm | B-2014GES07-25 | B-2014GES07-100 |
| 11/2″ | 44.5 × 36 × 2 mm | B-2014GES08-25 | B-2014GES08-100 |
| 2″ | 56 × 43.5 × 2 mm | B-2014GES09-25 | B-2014GES09-100 |
| 21/2″ | 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.
GREENSEAL PRO 180 is a standard-duty cellulose/NBR option, not a universal default.
Its source data lists water, oils, alcohols and glycols, while the cited FDA and KTW references are inputs to a regulated-use assessment rather than blanket approval of every cut size.
Select it only after the exact supplied grade, fluid, temperature-pressure envelope, face condition, gasket stress and required documentation have been checked for the joint.