Compression packings—also known as gland packing—are braided sealing materials installed in a stuffing box to control leakage around a rotating or reciprocating shaft, or a valve stem.
Correct packing selection can improve reliability, reduce shaft and sleeve wear, and help you manage leakage safely under pressure, temperature and chemical exposure. TRCI supports specification for demanding services in pumps, valves and process equipment.
Compression packings are braided cords manufactured from fibres such as PTFE, graphite, aramid or hybrid blends. They are cut into rings and installed in the stuffing box to create a controlled seal around shafts or stems.
Packing performance depends on fibre type, impregnation/lubrication, braid construction and correct installation. Selection is based on media compatibility, shaft speed, pressure, temperature and the acceptable leakage rate for the application.
PTFE packings offer excellent chemical resistance and are widely used in chemical service, water and many process applications. They can support low friction behaviour and clean operation depending on construction and impregnation.
Typical for: chemically aggressive media and broad chemical compatibility (application-dependent).
Graphite packings are often selected for high-temperature services such as steam and hot water, and for applications where thermal stability and good heat dissipation are critical. Construction and oxidation conditions influence suitability.
Typical for: steam and high-temperature duty (selection-dependent).
Aramid fibre packings are used in abrasive or solids-containing service where mechanical strength and extrusion resistance are important. They may increase shaft wear if not matched correctly to sleeves and operating conditions.
Typical for: abrasive slurries and high mechanical stress (application-dependent).
Hybrid packings combine fibres and impregnation systems to balance chemical resistance, thermal stability and mechanical strength. They are often selected to address challenging combinations of pressure, speed, temperature and media.
Typical for: demanding mixed-duty service where one fibre type alone is not ideal.
Compression packings are used wherever a stuffing box seal is required—especially in industrial pumps, mixers, agitators and valves operating under pressure and temperature.
Share the details below and we’ll recommend the best-fit packing construction and installation approach:
In many rotating applications, controlled leakage is expected to provide cooling and lubrication. The acceptable leakage rate depends on the process and safety requirements.
Common causes include over-tightening, incorrect packing selection, insufficient lubrication/flush, misalignment, or worn sleeves. Correct selection and installation help reduce heat generation.
Yes—incorrect packing selection or installation can increase wear. Choosing the right packing and maintaining correct adjustment helps protect sleeves and shafts.
Selection depends on media compatibility, temperature, pressure, speed and solids/abrasion. Share your operating data and we’ll recommend the best-fit option.
Stuffing box dimensions, media, pressure, temperature, speed, sleeve condition and your leakage target.
Tell us your equipment type, stuffing box size, medium, pressure, temperature and shaft/stem speed. If you’re experiencing leakage, overheating or wear, include the symptoms and current packing type. We’ll recommend the best-fit packing and practical installation guidance.