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Ningbo Kaxite Sealing Materials Co., Ltd. is an ISO 9001:2015 certified manufacturer of industrial gaskets and sealing products, specializing in spiral wound gaskets, Kammprofile gaskets, PTFE seals, and braided packing for oil & gas, chemical, and power generation industries. With 4.5M annual capacity and clients in 100+ countries.
Kaxite Company

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Industrial Gasket Manufacturer & Global Supplier

Industrial Gasket Manufacturer & Sealing Solutions Supplier for Oil & Gas, Chemical and Power Plants

Ningbo Kaxite Sealing Materials Co., Ltd. is an ISO 9001:2015 certified manufacturer and supplier of spiral wound gaskets, kammprofile gaskets, ring joint gaskets, PTFE seals and braided packing. We help plant engineers, EPC contractors, MRO buyers and industrial distributors in 100+ countries stop flange leaks and unplanned shutdowns with custom-engineered sealing solutions built for high pressure, high temperature and aggressive media service.

Minimum Order
From 100 Pcs
Standard sizes in stock for trial orders; low MOQ for custom drawings.
Lead Time
7–10 Days
Sample and small-batch delivery. 15–20 days for complex or high-volume orders.
Trade Terms
EXW / FOB / CIF
Flexible Incoterms and payment terms including T/T and L/C at sight.
Custom Solutions
OEM / ODM
Private labelling, custom packaging and made-to-drawing gaskets from your sketches.
6,000 m²
Integrated Factory
4.5M pcs
Annual Capacity
100+
Export Countries
100%
Batch Tested

Sealing Solutions by Industry Application

Selecting a gasket by size alone causes premature failure. Kaxite matches sealing material, construction and facing finish to your actual operating conditions — media, pressure, temperature cycling and flange standard — so the joint holds for the full maintenance cycle.

Oil & Gas Sealing Solutions

Spiral wound, ring joint and kammprofile gaskets for refineries, transmission pipelines, wellheads and offshore platforms. Rated from -196 °C cryogenic service up to 650 °C, with NACE MR0175 compliant metallurgy for sour gas.

ASME B16.20 API 6A NACE MR0175
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Chemical & Petrochemical

PTFE, modified PTFE, expanded graphite and non-asbestos gaskets for reactors, columns, heat exchangers and acid pipelines. Selected for resistance to acids, alkalis, solvents and steam, with low cold-flow under bolt load.

PTFE / RPTFE Graphite Non-Asbestos
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Power Generation & Steam Systems

High-temperature sealing for steam turbines, HRSG boilers, condensers, flue gas ducts and feedwater lines. Graphite and mica based constructions maintain seal integrity through thermal cycling up to 650 °C without creep relaxation.

Up to 650 °C Steam Service Thermal Cycling
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Water Treatment & Desalination

Rubber, EPDM, nitrile and PTFE gaskets for pumps, valves, RO membrane housings and seawater intake lines. Formulated for chloride-rich and mildly oxidising media where metal gaskets would corrode.

EPDM / NBR Seawater RO Systems
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Marine, Offshore & Shipbuilding

Flange insulation kits, copper gaskets and braided packing for ship engines, ballast systems, cargo manifolds and offshore topside modules. Supplied with isolation sleeves and washers to stop galvanic corrosion at dissimilar metal joints.

Isolation Kits Copper Marine Grade
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OEM & Custom Manufacturing

Send a drawing, a sample or even a photo with dimensions — our engineering team returns a quotation and 2D/3D confirmation within 24 hours. Private labelling, custom packaging and drop-shipping available for distributors and OEM partners.

Made to Drawing Private Label 24h Quote
Send your drawing

Certified Quality You Can Audit

Every shipment carries an in-house material test report. Third-party inspection and EN 10204 3.1 / 3.2 certificates are available on request.

ISO 9001:2015 CE Certified API 607 Fire Safe NACE MR0175 ASME B16.20 EN 1514 / EN 12560 EN 10204 3.1 RoHS / REACH

Frequently Asked Questions

Direct answers to the questions our buyers ask most before placing a first order.

QWhat types of gaskets and seals does Kaxite manufacture?

Kaxite manufactures spiral wound gaskets, kammprofile (grooved metal) gaskets, ring joint gaskets, double jacketed gaskets, corrugated gaskets, PTFE and modified PTFE gaskets, expanded graphite gaskets, rubber gaskets, copper gaskets and flange insulation gasket kits. We also produce braided packing, compression sheets and PTFE / PEEK machined seals for the same industries.

QWhat is the MOQ and lead time for custom gaskets?

Standard catalogue sizes start from 100 pieces with stock available for trial orders. Custom gaskets made to your drawing have no fixed MOQ — we accept prototype and small-batch runs. Sample and small-batch lead time is 7–10 working days; complex geometries, special alloys or high-volume orders take 15–20 working days. Expedited production is available for shutdown and turnaround schedules.

QWhich trade terms and payment methods do you accept?

We quote on EXW, FOB Ningbo/Shanghai, CIF and DDP terms. Payment is accepted by T/T (30% deposit, 70% before shipment), L/C at sight, or negotiated terms for repeat customers. Shipping is arranged by sea, air or express courier depending on order volume and urgency.

QDo you supply material certificates and third-party inspection?

Yes. Every batch is tested in our in-house laboratory for compression, creep relaxation, tensile strength and sealability, and ships with a material test report. EN 10204 3.1 certificates are issued as standard on request, and 3.2 certificates, SGS, BV or TUV third-party inspection can be arranged before shipment.

QCan you handle OEM branding and custom packaging?

Absolutely. We offer private labelling with your logo on the gasket, carton and product tag, custom packaging sizes and barcoding, plus drop-shipping for distributors. Our engineering team can also work from a drawing, a physical sample or a photo with dimensions and return a quotation with 2D/3D confirmation within 24 hours.

Get a Sealing Solution Quoted Within 24 Hours

Send us your flange size, pressure rating, temperature and media — or simply upload a drawing. Our engineers will recommend the right gasket construction and return pricing, lead time and shipping terms.

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