The APD^®302 and 302SD seals are designed, manufactured and tested according to API 4^th edition.

While APD^®302 is the prototype, both seals have rugged construction and superior clogging resistance. Designed for harsh operating conditions, they are especially suited for high-pressure and high-temperature processes with crystallizing, highly abrasive or viscous media.

• APD^®302：Design for medium abrasion, high abrasion, and viscosity services.
• APD^®302SD：Customized design for high abrasion or viscosity services.

• Temperature：-40 ~ 230℃ (-40 ~ 446 ℉ )
• Pressure： up to 430 psig (30 kg/cm²G)
• Surface Speed： Up to 5000 fpm (25 m/s)

• Stationary Ring：Silicon Carbide / Tungsten Carbide
• Rotary Ring：Silicon Carbide / Tungsten Carbide / Carbon Graphite
• Metal Parts：316 SS / 304 SS / 316L SS / 316Ti SS / Duplex Stainless / Alloy C-276 / Titanium / Monel^®
• Elastomeric O-rings：FKM / AFLAS / NBR / EPDM / TV / FFKM (SceniRAZ^® / Chemraz^® / Kalrez^®)
• Gland Gasket：Glass-Filled PTFE / Non- Asbestos / Spiral-Wound
• Springs：316 SS / Alloy C-276 / Inconel^®

• Designed for heavy industry pumps pumping very viscous media, such as asphalt or pitch transfer pumps under high temperature towers, large heavy oil transfer pumps and refining process pumps.
• Prevent hazardous emissions of acidic, caustic, corrosive, volatile and toxic media.
• Ideal for high viscosity applications, such as emulsions, latex and rubber.
• Reliable sealing for high temperature, high or varying pressure processes.
• Engineered to cope with process fluids prone to crystallize, or with a high percentage of abrasive solids or powder.
• Withstand dry running involved with frequent starts and stops.
• Used for dry-running applications in specialty equipment, such as air transportation blowers.
• Ability to tolerate short intermittent dry-running in batch charging and discharging equipment.
• Widely used in the refining, petrochemical, rubber, chemical, food and beverage, pharmaceutical, pipeline transportation, renewable energy, and power generation industries.