PTFE Braided Gland Packing | High-Performance Valve & Pump Seals

Product Overview & Manufacturing Excellence

Engineered for critical dynamic pumps, rotary shafts, and high-duty control valves, our braided PTFE Gland Packing delivers exceptional chemical inertness, self-lubricating performance, and long service life. Interbraided from high-tensile 100% pure virgin PTFE yarns—or expanded PTFE filaments impregnated with specialized PTFE dispersion and inert food-grade lubricants—this flexible packing maintains uniform cross-sectional density and structural stability under continuous gland pressure.

Available in square cross-section coils, pre-cut packing rings, and die-formed ring sets, our PTFE packing eliminates shaft wear and fluid leakage across severe chemical, pharmaceutical, and industrial fluid handling applications.

Key Performance Advantages

• Universal Chemical Resistance: Inert across pH 0–14 (except molten alkali metals and elemental fluorine), preventing degradation and swelling in aggressive acids, caustics, and solvents.

• Ultra-Low Shaft Friction: Self-lubricating fluoropolymer filament structure reduces stem friction, prevents shaft scoring, and minimizes breakaway torque.

• Wide Thermal Operational Range: Performs reliably across continuous thermal exposure from cryogenic -200°C (-328°F) up to +260°C (+500°F).

• FDA & Sanitary Compliant: Formulated with non-contaminating, non-toxic materials compliant with FDA requirements for clean bio-pharmaceutical and food-grade operations.

• High Density Interbraid Structure: Lattice interbraid construction prevents unraveling during cutting and maintains uniform seal compression in stuffing boxes.

Technical Specifications

• Material Composition: 100% Pure Virgin PTFE Filament, Expanded PTFE (ePTFE) Yarn, or PTFE with Inert Food-Grade Break-In Lubricant

• Cross-Section Sizes: 3 mm x 3 mm up to 50 mm x 50 mm (1/8" to 2" square profiles standard)

• Operating Pressure: Up to 20 Bar (290 PSI) for rotary pumps; Up to 100+ Bar (1,450 PSI) for control valves and reciprocating rods

• Linear Velocity: Up to 10–12 m/s for dynamic rotary applications

• pH Range: 0 to 14 (Universal)

• Supply Forms: Continuous spools (5 kg / 10 kg coils), pre-cut cut-to-length strips, and die-formed compressed packing rings

Primary Applications

• Industrial Valves: Control valve stems, gate valves, and plug valves handling aggressive acids, chlorine, solvents, and corrosive gases.

• Rotary & Reciprocating Pumps: Centrifugal pumps, slurry pumps, chemical dosing pumps, and mixers operating in corrosive media.

• Pharmaceutical & Food Processing: Sterile fluid pumps, agitation shafts, and batch processing equipment requiring clean, non-contaminating gland seals.

• Paper & Pulp Manufacturing: Black liquor pumps, bleaching towers, and caustic processing lines.

Quality Assurance & Packaging

• Dimensional & Density Checks: 100% cross-section gauge verification ensures precise square tolerances and uniform mass per meter.

• Clean & Secure Spooling: Precision-wound on rigid plastic spools, sealed in dust-proof poly bags, and boxed in sturdy master cartons to preserve cleanliness and cross-sectional shape.

Contact our technical sales team to request custom ring dimensions, specialized lubricant grade selection, or a quick quotation for your sealing needs.