We manufacture full-series customized Filter End Caps (Filter End Covers), core structural & sealing accessories matched for dust filter cartridges, air filters, activated carbon filter cartridges and industrial liquid filter elements. Adopting deep drawing stamping and one-piece forming craft, our end caps perfectly lock filter media, support inner skeleton and eliminate air/liquid bypass leakage. Multiple material, interface and sealing groove options available for global filter manufacturers and environmental equipment factories, with mass OEM custom orders supported.

Product Classification & Production Craft

1. Metal Filter End Caps (Main Industrial Type)

Made via full-automatic CNC deep drawing & punching integrated molding, no splicing gaps, flat surface with precise concentricity. Built-in EPDM rubber sealing groove, positioning tabs, bolt holes, threaded ports and 226/228 fin interfaces for matching all standard filter housings.

Surface treatments: galvanized, color coated, stainless steel polishing, anti-rust passivation.

2. PU Plastic End Caps

One-step injection molding polyurethane end caps, integrally bonded with filter paper without extra adhesive. Elastic sealing performance, lightweight, low cost for household water filters and light-duty air filters.

3. Aluminum Alloy End Caps

Lightweight deep drawn aluminum caps, good heat dissipation, high strength-to-weight ratio, widely used for truck & engineering machinery air filters.

Raw Material & Complete Technical Parameters

Optional Base Materials

Galvanized Cold Rolled Steel: Cost-effective, mainstream for pulse dust removal filter cartridges, general industrial air filters
SUS304 / SUS316 Stainless Steel: Acid, alkali & salt fog resistant, for chemical waste gas, sewage liquid filtration, coastal corrosive workshops
Aluminum Alloy: Ultra-light, heat resistant, for vehicle engine air intake filters
PU Polyurethane: Elastic integrated sealing, food-grade optional for drinking water purification filters

Core Standard Specifications

Matching Filter Diameters: 160/320/325/350/490mm custom sizes
Thickness: 0.6mm–1.5mm metal plate customizable
Interface Types: Flat open cap, closed blank cap, threaded cap, 226 fin cap, flange bolted cap, lug positioning cap
Sealing Design: Single/double O-ring groove, built-in rubber gasket integrated structure
Surface Finish: Hot-dip galvanizing, electrostatic gray/black powder coating, mirror polishing

Core Competitive Advantages

✅ Precise One-Piece Forming, Zero Bypass LeakageHigh concentric deep drawing craft ensures tight fit between end cap, filter media and support mesh, completely block unfiltered air/liquid bypass to guarantee filtration efficiency.

✅ Multi-Scene Anti-Corrosion Durability

Galvanized, coated or stainless options adapt to dry dust, high humidity, chemical mist and coastal salt fog environments, no rust or deformation during long-term equipment operation.

✅ Diversified Interfaces Match Global Standard Housings

Complete range of positioning tabs, screw threads, sealing fins and mounting holes, compatible with domestic and imported dust collectors, air purifiers and water filter equipment.

✅ Stable Structural Support Extend Filter Service Life

Rigid metal frame bears airflow impact and pulse backblowing vibration, prevent filter paper pleat collapse and cartridge deformation.

✅ Easy Automatic Filter Assembly

Uniform dimensional tolerance, smooth flat surface suitable for automatic hot melt bonding and mass filter production, improve factory processing yield.

✅ Flexible Customization Service

Custom outer diameter, inner hole size, sealing groove depth, positioning lug shape and surface color per customer filter drawings, small sample trial orders accepted.

Wide Application Scenarios

Dust Removal Industry: Pulse jet dust filter cartridge top & bottom end caps, welding fume filter accessories
Vehicle & Machinery: Heavy truck, excavator, generator air filter aluminum end caps
Water Purification: UDF/CTO activated carbon filter plastic & metal end covers
High-Temp Waste Gas: PPS high-temperature filter stainless steel end caps for boiler flue gas equipment
Air Purification: Central air conditioning, fresh air medium-efficiency filter galvanized end caps
Chemical & Food: SUS316 anti-corrosion end caps for beverage liquid and chemical solvent filtration cartridges

Customization & Global Export Service

Custom material thickness, dimension, interface structure and surface anti-rust treatment according to filter cartridge parameters. Free samples, dimension test reports and technical drawings provided for factory assembly testing. Strict inspection of flatness, concentricity and sealing groove precision before shipment, stacked with waterproof film + export wooden pallet packaging. Mixed container loading with industrial filter paper, dust filter cartridges and activated carbon filters to cut ocean freight cost.

Our filter end caps are exported to Southeast Asia, Middle East, Europe, Australia and Africa. We maintain long-term stable supporting cooperation with filter manufacturers, environmental engineering companies and machinery OEM factories worldwide.

Company Profile

We are an integrated manufacturer of filter raw materials & accessories, covering filter end caps, industrial filter paper, dust filter cartridges, air filters, activated carbon filter elements and full series metal wire mesh. Equipped with automatic stamping, deep drawing and coating production lines, we supply one-stop supporting parts solutions for global purification industry buyers.

Post time: Jun-25-2026