Sanitary Anti-Mold Silicone Sealant
Kitchen & bathroom neutral sealant with super mold-proof formula. Effective anti-mold, excellent waterproof, fast curing for healthy living spaces.
| Product Standard | JC/T 885-2016 |
|---|---|
| Cure System | Neutral Cure |
| Packaging | 300mL cartridge |
| Shelf Life | 12 months from production date |
| Transport | Non-hazardous goods |
| Storage | Dry, ventilated, cool place |
Technical Data
| Mould growth grade | Grade 0 — no growth at 50x magnification |
|---|---|
| Test organisms | 9 strains incl. Aspergillus niger, Penicillium citrinum, Trichoderma viride |
| Test duration | 28 days at >90% RH, 28°C |
| Test laboratory | Guangzhou Institute of Microbiology (CNAS / CMA accredited) |
|---|---|
| Standard | JC/T 885-2016 |
Typical values obtained under laboratory conditions (23°C / 50% RH) and not intended for specification purposes. Tested to JC/T 885-2016 — Report No. WJ20220708. Download the full test report on request.
Product Characteristics
- Excellent mildew resistance for wet environments
- Waterproof sealing for kitchenware and sanitary ware
- Good adhesion to most building materials without primer
- 0-solvent formula for indoor air quality
- Fast curing for quick project completion
- Non-corrosive to many materials
Applications
- Bathtub, shower enclosure and basin sealing
- Kitchen countertop, sink and backsplash
- Toilet and plumbing fixture installation
- Tile edge and glass partition sealing
Limitations
- Not for structural bonding
- Do not apply on damp surfaces
- Not for long-term water immersion
- Apply at 4°C to 40°C
Where PR-218 Is Used
Marine & Boat Building
Marine-grade silicone sealant for boat and yacht construction — salt water, UV and constant flexure resistant.
Cold Storage & Refrigeration
Low-temperature flexible silicone for cold room and freezer panel joints — resists freeze-thaw cycling and stays elastic below zero.
Swimming Pool & Wet Areas
Chlorine-resistant silicone for pool tile joints, wet areas and spa surrounds — Grade-0 anti-mold, chemically stable.
MOQ, Lead Time & Private Label — PR-218
FAQs — PR-218
What is PR-218 used for?
Bathtub, shower enclosure and basin sealing, kitchen countertop, sink and backsplash joints, toilet and plumbing fixture installation, and tile edge and glass partition sealing.
What mould resistance grade does PR-218 have?
Grade 0 — no mould growth at 50× magnification after 28 days at more than 90% relative humidity. It was tested against 9 strains including Aspergillus niger by Guangzhou Institute of Microbiology, a CNAS / CMA accredited laboratory.
Can it be used on chrome and acrylic?
Yes. PR-218 is neutral cure, so it does not attack chrome, anodised trim, enamel or acrylic. Acid cure sealants should be avoided on those surfaces.
How long before the shower can be used?
Wait for full cure, not just skin time. A typical bathroom bead takes around 24 hours at normal room temperature. Water exposure during cure is the most common cause of early failure.
What is the MOQ and lead time?
Standard OEM and private label MOQ is 1,000 pcs per model, with mixed-model trial orders from 3,000 pcs total and stock items from 500 pcs. Typical lead time is 15–25 days after artwork and sample approval.
What is silicone sealant anti mould, and how is it tested?
Silicone sealant anti mould grades contain a biocide package that suppresses mould growth on the sealant surface in permanently wet conditions. PR-218 is a neutral cure anti-mould sanitary sealant, tested to JC/T 885-2016, and specified for bathroom, kitchen and shower joints. Neutral cure matters here as much as the anti-mould property, because it will not attack the metal fittings and stainless steel present in a wet room.
How is anti-mould performance different from being waterproof?
They are separate properties and a sealant can be one without the other. Waterproofing is about the polymer resisting water passage; anti-mould is about the surface resisting fungal growth in permanently damp conditions. PR-218 is a neutral cure sanitary sealant tested to JC/T 885-2016 that does both. What no sanitary sealant does is survive continuous immersion — for tanks and pools, a different product is required.
Where should a sanitary silicone sealant not be used?
A sanitary silicone sealant is for building joints in wet rooms, not for immersion. PR-218 must not be used in continuous water immersion, on oily or exuding surfaces, or as a structural adhesive. Surface temperature must be between 4 °C and 40 °C at application. Where a joint ponds permanently, or where the sealant would be submerged, tell us the service environment before ordering.
Need pricing or a sample of PR-218?
Tell us the order volume, target market and any labelling requirement. We will come back with pricing, samples and the technical data sheet.
- Free adhesion & staining test on your own substrate sample
- OEM & private label from 1,000 pcs
- Typical lead time 15–25 days