What are the minimum order quantity and delivery cycle?

Standard products min 1kg, bulk 20kg. In-stock ships 48h, custom 3-7 days. Nationwide logistics.

How to get product samples and technical support?

Contact 400-901-0757 or +86-13531350189 for free selection guidance and sample delivery.

What quality certifications do products have?

产品按标准化的来料检验、配方变更、批次留样与出货检验流程管理生产。体系证书、第三方检测报告（耐候、耐温、盐雾、附着力、VOC 等）及 MSDS/SDS 可应客户所在市场的合规要求提供，也可在验厂时现场调阅。

Elastic Sealing · Joint Waterproofing

聚硫Sealant

Name: Polysulfide sealant KF-PS200 | KeXin New Material
Brand: Kexin New Materials
Availability: InStock

KF-PS200 Polysulfide Sealant

KF-PS200 polysulfide sealant is a two-component room temperature vulcanizing sealant based on liquid polysulfide rubber with manganese dioxide as the curing agent. After curing, the elastic sealing layer is resistant to water, oil, and chemicals. It is widely used for waterproof sealing of joints in concrete structures such as airport runways, bridge expansion joints, dams, and sewage treatment tanks.

Request a quote now View technical data

9Major Series

All-substrate coverage

95GU+

high-gloss baked finish

5MPa+

adhesion strength

500h+

Salt spray resistance

200°C

Baking temperature

ROHSCertifications

Eco compliance

ΔE<1

precise colour control

12 months

Shelf Life

SourceFactory

Factory-direct quality

Product Overview

ProductsOverview

Polysulfide sealant is a high-performance professional coating product developed and produced by KeXin New Material. It is scientifically formulated with high-quality resins and imported pigments and fillers, offering excellent adhesion, durability, and application performance. It is widely used in industrial manufacturing, architectural decoration, automotive and transportation, and other fields.

As a source coating factory, KeXin New Material strictly implements the ISO9001 quality management system for polysulfide sealant from formula design and raw material procurement to production and filling. The product has passed ROHS, REACH, and other environmental regulation certifications. Free sample testing and on-site guidance by technical engineers are provided.

Why choose polysulfide sealant?

✓

ISO-certified factory · direct from the manufacturer——End-to-end quality control from raw material to finished product, no trader margin

✓

Free sample testing · quality you can see——Samples from 1 kg, supplied with TDS and MSDS documentation

✓

On-site engineer guidance——Free on-site service in the Pearl River Delta region, remote technical support elsewhere

✓

Fast dispatch within 48 hours——Standard products well stocked; custom orders in 3-7 working days

✓

Complete coating system solutions——Primer / midcoat / topcoat systems designed as a matched set, one-stop procurement

✓

RoHS / REACH environmental compliance——Tested by third-party laboratories SGS/CTI, exported to 50+ countries

Product highlights

CoreAdvantages

Polysulfide Rubber · Exceptional Elasticity

The -S-S- disulfide bonds in the main chain of liquid polysulfide rubber give the sealant exceptional elasticity and recovery rate. Elongation at break is greater than 300%, and elastic recovery rate is greater than 90%. It can compensate for repeated displacement of concrete joints caused by temperature and load.

Water, oil and chemical resistant

Polysulfide sealant offers excellent water resistance, oil resistance (aviation kerosene/gasoline/diesel), and chemical resistance (10% acid and alkali solutions). It has good adhesion to concrete, steel, glass, and stone.

Room temperature vulcanization · Easy application

Two-component polysulfide sealant is mixed at a 10:1 ratio and vulcanizes at room temperature. Pot life 1-2 hours, tack-free 3-6 hours, fully cured 24-48 hours. Can be applied with a scraper or caulking gun.

Professional coating technology support services

Kexin has an experienced coating R&D and application team providing full-process support — from substrate analysis, coating selection and process-parameter optimization to on-site application guidance.

Eco-compliant green manufacturing system

All products are certified against the ROHS/REACH environmental regulations and their VOC content meets national environmental standards. Environmental performance test reports issued by authoritative third-party laboratories such as SGS and CTI are provided.

Complete quality control and batch traceability

A full-process quality control system, from incoming raw materials to dispatch of finished goods. Every batch passes rigorous physico-chemical testing and simulated coating trials. Each shipment is released with a batch test report and a product warranty.

Technical Parameters

TechnicalSpecifications

Basic parameters

Suitable substratesCovers all common substrate types

Coating typesAcrylic / PU / epoxy / UV

Curing methodBaking / air drying / UV curing

Gloss rangeHigh gloss / semi-gloss / matt

Colour optionsPrecise matching in any colour

Industries servedUsed across many industries

Environmental certificationROHS/REACH/GB

Packaging Specs4 L / 20 L drum packaging

Performance

Adhesion (cross-cut)Grade 0–1 (5B)

Pencil hardnessH-2H

Salt spray resistance240-500h

Damp-heat resistanceNo abnormality after 500 h

Perspiration resistantNo abnormality after 48 h

RCA abrasion resistance>200 cycles

Impact resistance50kg·cm

VOC content<420g/L

The technical parameters above are taken from test data of the Kexin New Materials laboratory (ISO 17025 accredited); actual values may differ slightly depending on application conditions and substrate. Please contact technical support to obtain a current COA test report.

FAQ

Frequently AskedFAQ

Which substrates and scenarios does it suit?+

Suitable for many common substrates, including steel, concrete, wood and plastics. Widely used in industrial manufacturing, architectural decoration, automotive and transport, furniture and home furnishings. For professional selection advice, call 400-901-0757.

What is the application method?+

Apply by conventional spray, brush or roller. Substrate must be clean, dry and grease-free. Ambient temperature 5-35°C, relative humidity <85% 为BestApplicationConditions。SpecificParameters — see Products TDS Technical Data Sheet。

Which primer or topcoat completes the system?+

We recommend using a matching primer and topcoat from the same Kexin series to secure system compatibility and best performance. A Kexin engineer can design a complete primer-midcoat-topcoat system for your specific service conditions, free of charge.

How to get samples and a quote?+

Free samples of standard products are provided (freight at the customer's cost), supplied with TDS and MSDS documentation. For bulk purchases please contact 400-901-0757 or 13531350189. Sample quantity from 1 kg; bulk orders from 20 kg.

How do I pick the right grade for my operating conditions?+

Choosing a coating product requires considering the substrate type, the service environment (temperature / humidity / chemical media), the required corrosion protection class (ISO 12944 C1-C5M), the application conditions and the budget. We recommend contacting our technical engineer on 400-901-0757 for professional selection advice; free trial spraying and test verification are supported.

What is the MOQ and lead time?+

Samples from 1 kg; regular products from 20 kg per batch. Stock items ship within 48 hours, made-to-order products in 3-7 working days. Door delivery can be arranged within the Pearl River Delta region.

Application guide

ApplicationProcess

Surface preparation

Clean substrates thoroughly of oil and rust. Blast steel to Sa2.5. Pre-treat per product spec to keep the substrate clean. Ambient 5-40°C, relative humidity<85%。

Primer / pre-treatment

Select the matching primer or pre-treatment per substrate and system. Mix strictly at the stated ratio and control DFT. Proceed after the primer dries; pre-stripe critical areas.

Main-coat application

Apply the main coat per the process spec, strictly controlling DFT, temperature/humidity and flash-off to keep the film uniform without sagging or pinholes.

Curing process

Cure fully by stoving or by ambient air drying as the product requires. Keep oven temperature uniform within ±5°C and ramp up gradually to avoid coating defects. For ambient-curing grades, ensure adequate ventilation and suitable humidity.

Inspection & acceptance

Inspect all parameters: dry film thickness, adhesion, gloss, colour difference and chemical resistance. Full performance testing is carried out against the relevant standards. Only after everything passes are the test report and warranty issued, and the goods are packed and shipped in dust-free conditions.

Application Scenarios