Gland Packing
KAF Vulcan India supplies an extensive range of braided gland packings engineered to meet the sealing demands of pumps, valves, agitators and other rotating and reciprocating equipment across a wide range of industrial applications.
Our range covers over 30 different gland packing grades, developed using advanced fibre types, high quality braiding methods and proven lubrication processes. This gives each packing a high degree of resilience, consistent volume retention and a superior lattice construction that requires less gland pressure to seal. The result is reduced equipment wear, lower maintenance frequency and a longer service life overall.
Whether you are maintaining an existing installation or specifying for a new application, our team can help you identify the right packing material based on your operating conditions.
Choosing the Right Gland Packing Material
The right packing grade depends on the specific operating conditions of your equipment. The key factors to consider are the type of fluid or media being sealed, the operating temperature and pressure, and whether the application involves rotating, reciprocating or static sealing.
As a general guide:
PTFE Packings work well in chemical processing environments where the media is corrosive or aggressive. They offer broad chemical compatibility and perform reliably across a wide temperature range, making them a practical choice for acids, alkalis and solvent applications.
Graphite Packings are the preferred option for high temperature and high pressure duties. Expanded graphite in particular offers very low friction and excellent thermal conductivity, making it well suited to steam valves, boiler feed pumps and refinery applications.
Carbon Graphite Packings combine the thermal resistance of graphite with good mechanical strength, making them suitable for high speed rotating equipment and applications involving steam or hot water.
Aramid and Kevlar Packings are specified where abrasion resistance and mechanical toughness are the primary requirements. These grades perform well in slurry pumps, paper stock pumps and other applications where the media contains abrasive particles.
If you are unsure which grade is right for your application, our team is available to help with selection based on your specific process conditions.
Sizes and Supply Options
Our standard gland packing range is available in a variety of cross-section sizes, supplied in standard coil lengths. Preformed rings are available in both standard and custom dimensions, cut at a 45 degree scarf angle for easier installation and more consistent sealing performance.
We supply packings in standard coil quantities as well as in bulk for larger maintenance programmes. Custom sizes and grades are available subject to minimum order quantities. All materials are available in both finished component and semi-finished stock form.
Industries We Serve
We supply reliable gland packing solutions designed to perform in demanding industrial environments across multiple sectors.
Frequently Asked Questions
Gland packing is a sealing material used to prevent leakage of fluids or gases around the shaft or spindle of rotating and reciprocating equipment such as pumps, valves, mixers and agitators. It is installed in the stuffing box of the equipment and compressed by a gland follower to create a seal. Gland packing is available in a variety of materials including graphite, PTFE, aramid and carbon fibre, each suited to different operating conditions.
There are several types of gland packing available, each designed for specific operating conditions and applications. The main types include expanded graphite packing, PTFE graphite packing, PTFE packing, carbon graphite packing, aramid gland packing, Kevlar aramid gland packing and preformed gland packing rings. The right type depends on the operating temperature, pressure, shaft speed and the nature of the media being sealed.
Gland packing is applied by first removing the old packing from the stuffing box using a packing extractor, cleaning the box thoroughly, then cutting new packing rings to the correct length and installing them one at a time with each joint staggered at 90 degrees. The gland follower is then tightened gradually to compress the packing and create a seal. A slight controlled leakage during initial running is normal and helps lubricate and cool the packing before final adjustment.
Gland packing offers several key advantages in industrial applications including low cost, ease of installation and replacement, suitability for a wide range of operating conditions and compatibility with most types of rotating and reciprocating equipment. Unlike mechanical seals, gland packing does not require precision engineering or complex installation, making it a practical and cost-effective sealing solution for pumps, valves and agitators across a broad range of industries.
Gland packing material is selected based on four key factors � the type of media being sealed, the operating temperature and pressure, the shaft speed and whether the application is rotating, reciprocating or static. Expanded graphite packing is preferred for high temperature and high pressure applications involving steam or hot process fluids. PTFE and PTFE graphite packings are suited to chemically aggressive media at moderate temperatures. Aramid and Kevlar packings are recommended for abrasive slurry applications where mechanical strength and wear resistance are the primary requirements.
Gland packing requires periodic inspection and adjustment to maintain effective sealing performance. A small controlled leakage is normal and helps cool and lubricate the packing in service. The gland follower should be checked and adjusted regularly to compensate for packing wear and compression. When leakage becomes excessive or uncontrollable, the packing should be replaced entirely. Using the correct packing grade and ensuring proper installation significantly extends service life and reduces maintenance frequency.
Gland packing and mechanical seals both prevent leakage in rotating equipment but differ significantly in design, cost and performance. Gland packing is a compressed fibre or graphite material installed in a stuffing box and is low cost, easy to install and suitable for a wide range of applications. Mechanical seals use precision-engineered rotating and stationary faces to create a near-zero leakage seal and are preferred where leakage must be eliminated entirely, such as in pharmaceutical, food processing and high pressure applications. Mechanical seals generally have a longer service life but are more expensive and require more precise installation.
Gland packing is used across a wide range of industries including chemical processing, petrochemical and refinery operations, power generation, water treatment and municipal infrastructure, paper and pulp manufacturing, food and beverage processing, pharmaceutical production, oil and gas, marine and general industrial maintenance. Its broad material range and versatility make it one of the most widely used sealing solutions in industrial applications globally.
The service life of gland packing depends on the operating conditions, the packing material selected and how well the equipment is maintained. In general, correctly specified and installed gland packing can last anywhere from several months to a few years in continuous service. High quality materials such as expanded graphite and Kevlar aramid packing typically offer longer service life in demanding applications. Regular inspection, proper adjustment and timely replacement when wear is detected are the key factors in maximising packing life.
Yes, certain grades of gland packing are specifically designed for high temperature and high pressure applications. Expanded graphite packing can withstand temperatures from -200�C to +3000�C in inert environments and pressures up to 360 Bar, making it one of the most capable sealing materials for steam valves, boiler feed pumps, refineries and power generation equipment. Carbon graphite packing also performs well under sustained high temperature and high pressure conditions. Material selection should always be based on the specific operating limits of the application.
