For rotary pumps, reciprocating pumps, mixers, and valve stuffing boxes, aramid PTFE braided packing delivers reliable sealing with self-lubrication, chemical resistance, easy installation, and asbestos-free compliance. This design addresses the typical pain points seen in daily maintenance—premature wear, oxidation-related leakage, and frequent retightening—by combining an aramid backbone with a PTFE surface and anti-corrosion additives.
Construction & Materials
Packing body: Through-core braided from anti-corrosion graphite yarn to mitigate sulfur/oxidation effects in service.
Surface treatment: Continuous PTFE coating on the outside of the braid, dried and finished for a durable, low-friction barrier.
Aramid fiber preparation: During fiber production, high-purity, ultrafine, highly active zinc powder is uniformly introduced to enhance anti-rust behavior.
Optional reinforcement: Metal wire can be integrated to boost tensile/compressive strength for high-load or high-speed duties.
Finish: Pre-molded profile, PTFE coating, oven-dried, final inspection, and packaged.
Performance Advantages
High load & speed capability: Aramid backbone (and optional metal reinforcement) manages elevated gland loads and shaft surface speeds with minimal creep or extrusion.
Corrosion and rust mitigation: Anti-corrosion graphite yarn, combined with zinc-enhanced aramid, reduces oxidation issues on stems, sleeves, and housings.
PTFE protection: Chemically inert, low-friction outer layer with acid/alkali resistance, wear resistance, and easy surface cleanability.
Asbestos-free: Meets environmental and workplace safety expectations.
Fewer adjustments: Stable volume/compliance under load helps maintain sealing stress, reducing retightening frequency and extending service life.
Cost-effective: Longer run time and less stem repair lower the total cost of ownership.
Typical Applications
Equipment: Rotary pumps, reciprocating pumps, agitators/mixers, valves (stems and static glands).
Industries: Oil & gas/petrochemical, power generation, water & wastewater, chemical processing, building services, aerospace support equipment.
Media: Water, slurries (check solids loading), acids/alkalis (within pH limits), hydrocarbons, utilities, and general process fluids.
This aramid PTFE packing is always verified for temperature, pressure, shaft speed, and pH against the product data for your selected size/grade.
Installation & Service Guidance
Stuffing box prep: Inspect stems/sleeves for finish and runout; remove residual deposits to prevent oxidation hot spots.
Ring cutting: Use a mandrel; cut to exact ID/OD; stagger joints 90–120°.
Loading: Tighten evenly to seat; run-in; re-snug after thermal stabilization.
Flush/solids: Where fines are present, use an adequate flush to reduce abrasive wear on sleeves.
Inspection: Check for uniform contact, confirm minimal leakage at operating temperature/pressure, and re-lube per OEM guidance if applicable.
Supply & Options
Cross-sections: From small valve sizes to large pump sections (custom sizes available).
Constructions: PTFE-coated aramid; aramid with anti-corrosion graphite core; optional metal-reinforced variants.
Compliance: Asbestos-free; packaging and labeling for plant-wide standardization.
