bulk CNAF gasket

Bulk CNAF Gasket Supply for Flange Sealing and Maintenance

Quick Answer: Bulk CNAF gasket orders usually cover compressed non-asbestos fibre sheets and custom cut flange gaskets supplied in larger quantities. CORASEALS can provide CNAF gasket sheets or finished CNAF gaskets to buyer specified dimensions, material grade and quantity. Send the gasket dimensions, fluid, temperature, pressure, flange standard and required quantity for a quotation.

CNAF means compressed non-asbestos fibre. This material is widely used for pipe flanges, pump covers, valve covers, heat exchanger joints and general industrial flange sealing. Bulk CNAF gasket supply is a practical option for maintenance teams, gasket cutting shops, distributors and OEM buyers who consume non-asbestos gaskets regularly.

This product group is part of the non-asbestos gaskets range at CORASEALS. A buyer can order CNAF gasket sheets for in house cutting or request finished gaskets cut from a drawing. Both routes help control repeat maintenance and production gasket costs.

Typical CNAF Gasket Applications

CNAF gaskets are used in water, steam, air, oil, fuel and many general chemical services. The exact service range depends on the fibre, the binder and the sheet grade. Typical applications include:

Pipe flange gaskets for water and hot water systems
Pump and valve cover gaskets
Heat exchanger flange gaskets
Compressor and gearbox cover joints
General maintenance gaskets for chemical equipment when the grade is confirmed for the medium

Do not treat CNAF as one material with one temperature and pressure limit. Two CNAF sheets with different binders can perform differently in the same flange. The selected grade must match the fluid, temperature and flange pressure.

Material Grades and Service Conditions

CNAF gasket sheets are produced with different fibre and binder combinations. The binder has a direct effect on fluid resistance, temperature resistance and mechanical strength. Common binder systems include NBR, SBR, EPDM and CR. Each binder supports different service conditions.

NBR bonded CNAF is often selected for oil and fuel resistance. EPDM bonded CNAF may be used for steam, hot water and some polar solvents. SBR bonded CNAF is common for general water service. CR bonded CNAF can be selected for refrigeration and some weather exposed joints. These are general comparisons only. Always confirm the grade with the sheet manufacturer or supplier before final selection.

Flange pressure rating, sheet thickness, gasket width and installation stress also affect performance. A CNAF gasket that works on a flat face flange at low pressure may fail on a raised face flange with high bolt load. CORASEALS asks buyers to provide complete service data instead of selecting a gasket only by outside diameter.

Bulk Supply and Custom Cutting

A bulk CNAF gasket order can include full sheets, finished gaskets or both. For full sheet supply, the buyer should specify sheet length, sheet width, sheet thickness, material grade and quantity. For finished gaskets, the buyer should specify inside diameter, outside diameter, thickness, material grade, required quantity and a drawing or sample if available.

Custom cut CNAF gaskets can be produced for round flanges, oval covers, rectangular joints and irregular sealing faces. The buyer can provide a detailed drawing or sample photo. Without a drawing, CORASEALS can quote gasket dimensions when the flange standard or groove dimensions are known. Dimensional confirmation is required for gaskets with bolt holes, because bolt hole pitch circle diameter and hole size affect fitment.

Common flange standards for CNAF gaskets include ASME B16.21 and EN 1514-1. The buyer should confirm the standard, flange class or PN rating before ordering. CNAF gasket sheets can be supplied in millimetre or inch dimensions depending on the drawing and market.

Information Required for a Bulk CNAF Gasket Quote

To quote correctly, CORASEALS needs the following information:

Gasket type: CNAF sheet or custom cut CNAF gasket
Material grade or binder requirement, if known
ID × OD × thickness for finished gaskets
Sheet length × width × thickness for sheet material
Operating temperature and pressure range
Sealed medium or fluid
Flange standard or drawing, if applicable
Required quantity and target delivery requirement

Bulk CNAF Gasket FAQ

What does bulk CNAF gasket mean?
Bulk CNAF gasket supply means larger volume CNAF gasket sheets or finished CNAF gaskets rather than small pack sales. Bulk supply is often used by distributors, gasket cutting shops and maintenance departments that consume non-asbestos gaskets regularly.

Can CORASEALS cut CNAF gaskets from a drawing?
Yes. CORASEALS can arrange custom cutting from customer drawings, flange standards or sample dimensions. The drawing should show ID, OD, thickness, bolt hole size, bolt hole pitch circle diameter and gasket shape.

Are CNAF gaskets suitable for steam and oil?
Some CNAF grades are suitable for steam, and some CNAF grades are suitable for oil. The binder and sheet grade decide the resistance. A steam rated CNAF grade may not be the best choice for hot oil. The fluid, temperature and pressure must be checked before ordering.

What thicknesses are common for bulk CNAF gasket sheets?
CNAF sheets are commonly supplied in thicknesses such as 0.5 mm, 0.8 mm, 1.0 mm, 1.5 mm, 2.0 mm and 3.0 mm. Availability depends on the grade and sheet size. The buyer should confirm the target thickness with CORASEALS before ordering.

Do you supply CNAF gaskets with bolt holes?
Yes. For ring gaskets and full face gaskets, the buyer can provide the flange drawing or bolt hole layout. CORASEALS will quote the gasket with the correct bolt hole dimensions.

For a bulk CNAF gasket quotation, send the gasket type, material grade, ID × OD × thickness, operating temperature, pressure, medium, flange standard or drawing, and required quantity. If you need sheet material, send the sheet length × width × thickness, grade and quantity.