REDSEAL PRO 110 —
rigid cotton-cellulose gasket for documented water service
The mapped technical source lists TZW, CRECEP and WRAS references for the material line, alongside REACH and RoHS declarations. Those references do not separately certify every cut size; current document scope and traceability to the supplied grade still control. The reported water-absorption result is a material test value, not evidence that the gasket swells to repair a damaged face.
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: REDSEAL is selected for documented water-focused duties where a rigid red fibre gasket is specified.
Use this when: documented potable-water duties, rigid flat-face joints and applications where a firm red fibre gasket is specified.
Do not use this when: do not use it to compensate for poor face condition, low bolt load, gas duty or high-temperature industrial service.
Move to the next material when: the job needs broader media coverage, softer conformance, gas approval or high-temperature performance.
What it is
REDSEAL PRO 110
REDSEAL PRO 110 is a non-asbestos gasket material based on cotton cellulose fibres — vulcanised, with the material system stated in the technical data. That last point matters: every other fibre gasket in the Kinetics Line range uses an NBR rubber binder to hold the fibres together and give the material its flexibility. REDSEAL does not. It is a water-focused fibre material with REACH and RoHS statements and drinking-water documentation whose exact market, product and use scope must be verified.
The technical data reports 47% water absorption after six hours. That is a material test property; it does not by itself quantify dimensional swelling, increased contact pressure or a self-sealing effect in a finished joint. Commission every joint leak-free and use the figure only within a validated design assessment.
Reported water absorption: 47% by mass after 6 hours. This is a material property of the vulcanised cellulose grade, not a direct measurement of sealing contact or joint tightness. Use it only alongside the exact joint geometry, load data and documented water-service scope.
How it seals — the mechanism
Mechanical compression
Joint is assembled and tightened. The gasket compresses between the mating faces — same as any flat gasket. Initial seal is created by mechanical contact.
Water-contact test result
The technical data reports 47% water absorption by mass after six hours under its stated test. Mass uptake is not the same as 47% dimensional swelling and does not quantify added gasket stress in a finished joint.
No inferred self-sealing effect
Commission the joint leak-free using the required initial gasket stress. Without dimensional-change and constrained-joint data, the absorption result does not prove that the gasket fills defects or raises contact pressure after first fill.
Treat water absorption as a material property reported under a defined test, not as compensation for an irregular face. Older or damaged seating surfaces still require inspection, repair or replacement under the joint procedure.
The application data is water-focused. Do not extend that scope to oils, fuels, glycols or other media without explicit compatibility evidence for the exact grade and conditions.
Water-contact references — and their limits
The mapped REDSEAL material source lists TZW, CRECEP and WRAS water-contact references. That source does not make every cut size a separately approved product; current document scope and supplied-grade traceability still control the claim.
TZW
Test/reference source — GermanyCRECEP
Water-contact reference — FranceWRAS
Material-listing reference — United KingdomREACH / RoHS
Restricted-substance compliance references — EUTZW, CRECEP and WRAS are water-contact references associated with German, French and UK market requirements. Their legal role, current validity and listing scope are not interchangeable; inspect the actual current document rather than treating the acronyms as three blanket product approvals. REACH and RoHS compliance supports restricted-substance compliance for the material.
The mapped technical source lists TZW, CRECEP and WRAS references for the material line. If a potable-water project calls for one of them, confirm the current document, exact scope, maximum water temperature and supplied-grade traceability before selecting REDSEAL.
When to use it — and what it is not for
Where REDSEAL makes sense
- Drinking-water joints where the current document explicitly covers the grade, market and intended use
- Potable water pipelines where TZW, CRECEP or WRAS is required
- Compatible general-water joints where the material construction, seating data and current documentation meet the specification
- Sound water-service faces that can deliver the seating stress required by this low-compressibility material
- Applications where current REACH and RoHS declarations for the supplied material satisfy the specification
Not for these applications
- Standard heating circuits — GREENSEAL PRO 180 is the simpler all-round option
- Oil, fuel or glycol service — use GREENSEAL or BLUESEAL
- Gas service — use BLUESEAL ULTRA 350
- Temperatures above 110°C
- Pressure duties outside the verified joint and material envelope
- Any medium not explicitly covered by current compatibility and documentation evidence
What makes it different from GREENSEAL for water service
GREENSEAL PRO 180 is suitable for water, glycols, oils and alcohols across a wider temperature range and has supplier-sheet references to FDA 21 CFR 175.300 and legacy KTW, both requiring a current scope check for regulated use. So why REDSEAL?
Two reasons. First, the drinking-water documentation: REDSEAL lists TZW, CRECEP and WRAS references. GREENSEAL's mapped supplier sheet cites FDA 21 CFR 175.300 and legacy KTW; it does not establish current German product conformity by itself. If the market or specification requires WRAS or CRECEP specifically, REDSEAL is one of the documented material options for that duty, subject to the listed scope.
Second, the sealing mechanism. GREENSEAL seals by controlled compression like a standard fibre gasket. REDSEAL is a rigid, low-compressibility material whose selection depends on mechanical seating and the applicable water-contact documentation. The reported absorption result is not evidence of added contact stress in the installed joint.
One important characteristic: REDSEAL has very low compressibility — 4.5% compared to 9% for GREENSEAL. It is a hard, rigid material. It requires adequate bolt load to seat correctly and does not conform to surface irregularities through compression the way softer materials do. The absorption result does not reduce the initial seating requirement: the joint still needs correct tightening on a clean, sound face.
Practical notes
Unlike standard fibre gaskets which are at maximum effectiveness immediately after tightening, The water-absorption result does not justify waiting for a leaking joint to seal itself. The assembly must be leak-free at commissioning; any visible seepage requires isolation and assessment of face condition, dimensions, seating load and service suitability.
REDSEAL PRO 110 has no anti-stick surface treatment. Used-gasket removal may therefore require careful separation and face cleaning. Do not attribute adhesion or removal force to dimensional swelling unless the inspected joint or supporting test data demonstrates it.
REDSEAL's available application and documentation data is water-focused. A dry or different-medium duty needs its own compatibility evidence; do not invent a secondary sealing mechanism from the water-absorption test. Its published 4.5% compressibility also means the face and available gasket stress need careful verification.
REACH and RoHS references address restricted substances within their respective scopes; they do not classify used-gasket waste. End-of-life handling depends on service contamination, the current safety data and local waste rules.
Sizes and packaging
| BSP size | Dimensions (mm) | SKU 25 pcs | SKU 100 pcs |
|---|---|---|---|
| 3/8″ | 14.5 × 9 × 2 mm | B-2014GIF21-25 | B-2014GIF21-100 |
| 1/2″ | 18.5 × 11 × 2 mm | B-2014GIF22-25 | B-2014GIF22-100 |
| 3/4″ Normal | 24 × 18 × 2 mm | B-2014GIF23-25 | B-2014GIF23-100 |
| 3/4″ Special | 24 × 16 × 2 mm | B-2014GIF24-25 | B-2014GIF24-100 |
| 3/4″ Normal | 24 × 14.5 × 2 mm | B-2014GIF24A-25 | B-2014GIF24A-100 |
| 1″ Normal | 30 × 24 × 2 mm | B-2014GIF25-25 | B-2014GIF25-100 |
| 1″ Special | 30 × 21 × 2 mm | B-2014GIF26-25 | B-2014GIF26-100 |
| 11/4″ | 39 × 30 × 2 mm | B-2014GIF27-25 | B-2014GIF27-100 |
| 11/2″ | 44.5 × 36 × 2 mm | B-2014GIF28-25 | B-2014GIF28-100 |
| Box set — 400 pcs — 3/8″ to 1″, 7 sizes | B-2014BOX4 | ||
Custom dimensions and non-standard sizes available on request through B2B contact.
REDSEAL PRO 110 is a rigid vulcanised cotton cellulose gasket with strong mechanical properties and potable-water documentation across three market references. It is a relevant option where documentation scope, restricted-substance compliance and material construction are all part of the specification.
TZW. CRECEP. WRAS. Drinking-water documentation for listed market scope. Vulcanised cotton-cellulose construction without an NBR binder, with REACH and RoHS statements in the supplied data. 47% water absorption reported under the stated material test, without treating it as proof of self-sealing in a finished joint.
For compatible standard heating or general-water duties, compare GREENSEAL PRO 180 against the actual operating envelope. REDSEAL belongs in the comparison when its water-service documentation and material behaviour match the exact joint and market requirement.