PTFE gasket sheet 3504 type

Description

Product Overview
PTFE gasket sheet 3504 type is a premium polytetrafluoroethylene (PTFE) compressed sheet engineered for high-performance sealing in demanding industrial environments. It serves as a resilient, chemically inert gasket material for flanges, valves, pumps and heat exchangers where aggressive media, wide temperature ranges, and stringent purity requirements are present. The key value proposition is long-term, leak-resistant sealing with exceptional chemical resistance and low thermal creep, reducing maintenance downtime and total cost of ownership. Strategically, this product enables reliable operations across chemical, petrochemical, pharmaceutical, and power-generation supply chains where failure of sealing components drives significant operational and safety risk.

Key Specifications & Technical Characteristics

• Product designation: PTFE gasket sheet, 3504 type

• Material composition: Virgin PTFE (polytetrafluoroethylene) matrix, optionally filled (specify fill on PO)

• Typical purity/grade: Industrial/technical grade PTFE (virgin resin basis ≥ 99% polymer content)

• Physical form: Flat sheet, uniform thickness options (standard sheets: 1.5 mm, 3.0 mm, 4.5 mm, 6.0 mm; custom thicknesses on request)

• Color: Natural/off-white (standard); options for colored identification available on volume orders

• Density: Approximately 2.1–2.3 g/cm³ (typical for compressed PTFE sheet)

• Hardness / compressibility: Engineered for optimal compressibility and recovery to maintain flange integrity (meets industrial sealing performance ranges)

• Temperature service range: -200 °C to +260 °C (application-dependent)

• Chemical resistance: Broad-spectrum resistance to acids, bases, solvents, oxidizers, and most corrosive media; unaffected by steam and most organic solvents

• Pressure capability: Suitable for low to medium-high pressure flange applications; specific rating depends on thickness, flange class and operating conditions (request datasheet for design calculation)

• Surface finish: Smooth, factory-compressed finish for consistent gasket seating and sealing behavior

• Packaging: Standard protective packaging—sheets stacked with kraft interleaving, polybagged, and palletized; options: single-sheet wraps, kraft board edge protection, shrink-wrap, and wooden crate for export

• Standard sheet sizes: 1,220 x 1,220 mm and 1,500 x 1,500 mm; custom dimensions and die-cut gaskets available

• Shelf life: Stable material with indefinite shelf life when stored dry, away from direct sunlight and excessive heat (recommend storage at 5–30 °C)

• Documentation: Certificate of Conformity (CoC), Mill Test Report (MTR) or material certificate available on request; full technical datasheet provided with commercial orders

Core Industrial Applications

• Chemical and petrochemical plants: Flange gaskets, pump and valve seals in contact with aggressive acids, alkalis, and solvents; performs where metal and elastomeric gaskets chemically degrade.

• Pharmaceutical and biotech: Pure, low-extractable sealing for reactors, vessels and sterile fluid transfer where product purity and cleanliness are mandatory.

• Oil & gas and refining: Reliable sealing for heat exchangers, piping runs and instrument connections operating across wide temperature and pressure excursions.

• Power generation and utilities: Steam and condensate sealing, turbine auxiliary systems, and intercepts where thermal stability and creep resistance lower maintenance cycles.

• Food & beverage processing: Food-grade compatible variants (specify compliance) for hygienic sealing applications that require non-contaminating materials.
  Why it outperforms alternatives:

• Chemical inertness and temperature envelope exceed most elastomers and many filled composites, reducing frequency of gasket replacement.

• Superior cold-flow resistance and recovery deliver more stable torque retention on flanges, minimizing leak events and rework.

• Versatile machinability and die-cut capability speed installation and reduce on-site modification time, lowering total installed cost.

Competitive Advantages

• Quality consistency: Manufactured under controlled compression processes with lot traceability and material certificates to ensure repeatable performance across batches.

• Supply reliability: Production and inventory planning designed for B2B continuity—safety stock and prioritized allocation for contract customers.

• Logistics capability: Palletized export-ready packaging, container loading optimization, and partnerships with international freight forwarders to support global distribution.

• Price competitiveness: Competitive pricing for BULK procurement (volume tiers available); total cost advantage driven by longer service life and lower maintenance frequency.

• Sustainability: PTFE product stewardship program for responsible sourcing and waste handling; packaging optimized to reduce transport footprint. (Recycling and disposal guidance provided.)

• Technical support: Application engineering support, installation guidelines, and failure-analysis assistance; full technical datasheet and safety data sheet (SDS) provided with samples and orders.

Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT

• Loading capacity (MT per container): Typical 20-foot container loading capacity up to 20 MT (subject to sheet dimensions, packaging configuration, and destination packing regulations). For high-density palletization and optimized packing, 40-foot HC containers may be used to increase throughput—contact sales for container-specific calculations and consolidated shipping plans.