|
Still deciding? Get samples of $ !
Order Sample
|
| Customization: | Available |
|---|---|
| Material: | Klingersil C4400 |
| Application: | Pipeline Flange |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
KLINGERSIL C4400 Insulating Gasket
What are the advantages of non-asbestos gaskets?
Advantages of non-asbestos gaskets
Compared with traditional asbestos gaskets, non-asbestos types provide:
1. Eco-friendly & safe
Free of asbestos, non-toxic, harmless to people and the environment; complies with modern environmental regulations and eliminates asbestos-related health risks (e.g. carcinogenicity).
2. Excellent sealing performance
Good compressibility/recovery and impermeability prevent leakage even under high temperature & pressure.
3. Strong chemical resistance
Resistant to oils, acids, fuels, steam, etc.; suitable for petrochemical, power-generation, marine and similar industries.
4. High temperature capability
Generally withstands up to 400 °C; some grades even higher, meeting the sealing needs of hot equipment.
5. Easy installation & low maintenance
Simple design, quick to fit and replace, long service life, reduced downtime and cost.
6. International compliance
Most products are certified to FDA, RoHS, GB/T 22209, BS 7531, etc., making them acceptable for food, pharmaceutical and other safety-critical sectors.
7. High customisability
Formulations and constructions (wire-reinforced, graphite-coated, etc.) can be tailored to specific pressure, medium and temperature conditions.
Summary
Because they are environmentally sound, safe and high-performance, non-asbestos gaskets have become the ideal replacement for asbestos gaskets and are now used throughout the petrochemical, power, automotive, marine, food and pharmaceutical industries.
How should a buyer judge whether an insulating gasket meets requirements?
Buyers should evaluate insulating gaskets from the angles of appearance, dimensions, electrical properties, mechanical properties, thermal ageing behaviour, etc., and give priority to products that carry third-party test reports and certification. Details are given below.
1. Visual & dimensional check (basic)
- Surface flat, free from cracks, blisters, inclusions, pits, folds;
- Thickness uniform, tolerance ≤ ±10 % of nominal;
- Edges clean, no obvious burrs or damage;
- Colour uniform (red, green, black as applicable), no objectionable odour (especially for synthetic-rubber types).
2. Electrical insulation performance (key indices)
- Withstand-voltage test: no breakdown at specified voltage (e.g. 3.5 kV, 15 kV) for 1 min;
- Breakdown voltage: top-grade sheets ≥ 20 kV mm-1;
- Volume resistivity: ≥ 10¹² Ω cm;
- Insulation resistance: ≥ 10¹² Ω (some high-end grades ≥ 5 GΩ).
3. Mechanical properties (service life)
- Tensile strength & elongation at break: the higher the better-indicates toughness;
- Compression set: reflects recovery; quality sheets show recovery ≥ 70 %;
- Hardness: select as required, commonly 30-60 Shore A;
- Puncture resistance: > 20 N for mechanically stressed applications.
4. Thermal ageing & environmental resistance
- Air-oven ageing (e.g. 70 °C × 72 h): tensile-strength loss ≤ 10 %;
- Damp-heat test (e.g. 85 °C / 85 % RH): property decay ≤ 10 %, no blistering, chalking or cracking;
- Thermal-shock cycling: stable performance after high/low-temperature cycles;
- Oil-exudation rate: ≤ 3 % for thermally conductive grades, ≤ 1.5 % for high-thermally-conductive types.
5. Environmental & regulatory compliance
- Odour-free, halogen-free, heavy-metal-free, meeting RoHS, REACH, ELV, etc.;
- Conform to HG 2949-1999 "Electrical insulating rubber sheets", IEC 61111, ASTM D 178 or equivalent standards.
6. Purchasing recommendations
a) Ask the supplier for third-party test reports (SGS, TÜV, CNAS, etc.);
b) Confirm that the grade matches the application (voltage class, thickness, medium);
c) Prefer brands with proven industry experience and good reputation;
d) Verify samples: commission a local lab or perform in-house voltage/resistance tests;
e) Sign a quality agreement covering warranty, returns and replacements.
Summary
Do not judge an insulating gasket by appearance or price alone. Base your decision on electrical and mechanical performance, thermal stability, environmental compliance and, above all, authoritative test data; only then can you be sure of procuring a product that truly meets your requirements.
Below are other products produced by our factory.
| Xiamen Qishine Industry Co., Ltd. PRODUCT MATERIAL CERTIFICATE (as per EN 10204.3.1) Certificate No.: J230621 Date: 2025.7.28 |
|||||||||||||||||||||||||
| Order No. | Product Name | Size Specifications | Flange Standard | Material Specifications | QTY | ||||||||||||||||||||
| Retainer | Sleeve | In. Washer | S. Washer | ||||||||||||||||||||||
| QS230615 | Insulation Gasket Kit | 10" 150# E-3 | ASME B16.5 WN | Klingersil C4400 | G10 | G10 | ZPS | 10set | |||||||||||||||||
| Insulation Gasket Kit | 8" 150# E-3 | ASME B16.5 WN | Klingersil C4400 | G10 | G10 | ZPS | 15set | ||||||||||||||||||
| Insulation Gasket Kit | 4" 150# E-3 | ASME B16.5 WN | Klingersil C4400 | G10 | G10 | ZPS | 20set | ||||||||||||||||||
| Insulation Gasket Kit | 2" 150# E-3 | ASME B16.5 WN | Klingersil C4400 | G10 | G10 | ZPS | 10set | ||||||||||||||||||
| Retainer Material Properties | |||||||||||||||||||||||||
| Material | Dielectric Strength Volt/Mil | Compressibility % | Recovery % | Max. Working Pressure Bar | Max. Working Temperature ºC | ||||||||||||||||||||
| Klingersil C4400 | 540 | 11 | 55 | 100 | +400 | ||||||||||||||||||||
| Washer Material Properties | |||||||||||||||||||||||||
| Material | Dielectric Strength Volt/Mil | Compressive Strength Psi | Tensile Strength Psi | Water Absorption % | Working Temperature ºC | ||||||||||||||||||||
| G10 Sheet | 650 | 50,000 | 47,000 | 0.08 | +150 | ||||||||||||||||||||
| Sleeve Material Properties | |||||||||||||||||||||||||
| Material | Dielectric Strength Volt/Mil | Water Absorption % | Working Temperature ºC | ||||||||||||||||||||||
| G10 Sleeve | 550 | 0.1 | +150 | ||||||||||||||||||||||
| Steel Washer Material Properties | |||||||||||||||||||||||||
| Material | Chemical Composition | Mechanical Properties | |||||||||||||||||||||||
| C % | Si % | Mn % | P % | S % | Ni % | Cr % | Y. S. N/mm2 | T. S. N/mm2 | EL. % | ||||||||||||||||
| CS | 0.14 | 0.02 | 0.57 | 0.014 | 0.007 | 0.002 | 0.008 | 340 | 455 | 35 | |||||||||||||||
| ,ASME B16.5,. THE PRODUCTS HAVE BEEN CHECKED UP TO ASME B16.5 STANDARD AND ARE FINALLY QUALIFIED FOR DELIVERY. Checker: Q. C. DEP |
|||||||||||||||||||||||||
*Client info hided*
XIAMEN QISHINE
Our company was founded in 2013.
Through out the following years we have been constantly growing with the aim of offering a better service to our customers.
Qishine dedicated to supply extensive range of Pipes, Valves, Flanges, Pipe Fittings, Fasteners,Gaskets and miscellaneous for all kinds of industry. Such as refineries, chemical and petrochemical plants, thermal and nuclear power plants, thermo solar facilities and other industrial sectors.
In our great portfolio you can find all kinds of valves, flanges and fittings, supplying either for the small business or for big projects. We are experts in the supply of carbon, stainless and alloyed steel.
At XIAMEN QISHINE, we offer more than just products- you'll get high-quality, durable goods at the best prices, backed by professional service.
){kind=link}