Company Profile

PTFE Gasket Supplier for Chemical, High-Purity, and Industrial Flange Sealing

Quick Answer: PTFE gaskets are used where flange connections must resist aggressive chemicals, high-purity media, or wide temperature swings without contaminating the process. CORASEALS supplies standard and custom PTFE gaskets in sheet, cut, machined, and filled grades. Send the flange standard, gasket ID × OD × thickness, fluid type, temperature, pressure, and required quantity to receive a material-specific quotation.

PTFE gasket selection starts with the flange design and the fluid. CORASEALS works as a PTFE gasket supplier for maintenance teams, distributors, and OEM buyers who need a clear product scope without supplier confusion. The product range includes virgin PTFE, filled PTFE, expanded PTFE, and machined PTFE gaskets for standard pipe flanges, equipment manways, heat exchangers, and custom sealing joints.

Standard dimensions can be quoted from ASME, EN, JIS, DIN flange data, or customer drawings. Buyers should not rely only on a type code or a brand name. A PTFE gasket supplier must confirm the gasket inside diameter, outside diameter, thickness, material grade, and filler content before quoting. Without the ID, OD, thickness, material grade, and filler content, the quote can miss the sealing performance or the mechanical fit.

PTFE Gasket Types Available from CORASEALS

Different PTFE gasket types suit different flange conditions and installation methods.

• Skived PTFE sheet gaskets for chemical pipe flanges and general industrial joints
• Molded PTFE sheet gaskets for thicker sections and larger gaskets
• Expanded PTFE gaskets for irregular or damaged flange surfaces
• Glass filled PTFE gaskets for reduced creep under higher bolt load
• Carbon or graphite filled PTFE gaskets for better thermal conductivity and lower cold flow
• Machined PTFE gaskets for tight tolerances, sanitary connections, or special profiles

The correct PTFE gasket depends on the fluid concentration, temperature, pressure, and bolt load. Unfilled PTFE resists many acids and solvents but may creep under high mechanical load. Filled PTFE reduces creep but can change chemical compatibility. CORASEALS confirms the filler content and application conditions before proposing a grade.

Material Selection for PTFE Gaskets

Material selection cannot be reduced to a single data sheet. A PTFE gasket supplier needs to know the chemical name, concentration, and operating temperature. Some media are safe with virgin PTFE but not with certain fillers. Glass filled PTFE can be unsuitable for hydrofluoric acid or strong hot caustic service. Barium sulfate filled PTFE is commonly selected for food and pharmaceutical use, but the final suitability must be confirmed against the process.

Common PTFE gasket materials include:

• Virgin PTFE for broad chemical resistance and high purity
• Glass filled PTFE for dimensional stability and creep resistance
• Carbon filled PTFE for strength and moderate chemical exposure
• Graphite filled PTFE for lower friction and better heat transfer
• Barium sulfate filled PTFE for food, drug, and sanitary sealing
• Expanded PTFE for soft, conformable gaskets on imperfect surfaces

Some PTFE gaskets are ordered by trade names, but type names alone do not define the material limit. CORASEALS uses the material composition and the flange conditions to match the product. Where PTFE is not the right material, the sales team can compare graphite gaskets, non-asbestos gaskets, or sanitary gaskets from the same gasket product range.

Standard and Custom PTFE Gasket Dimensions

CORASEALS quotes PTFE gaskets by ID, OD, and thickness. For standard flanges, the user can send the flange standard, nominal pipe size, and pressure class. The gasket dimensions are then