PAL Thermoguard 500 is a high temperature grease supplier in India for kilns, furnaces, and ovens. Contact PALCO for product details and bulk supply enquiries.
Inside a continuous furnace or a brick kiln, the temperature never really falls. Door hinges stay hot for hours. Kiln cars roll slowly through zones that would soften or melt an ordinary grease. Oven racks, tyre moulds and even some automotive points see the same problem: heat that is high enough and constant enough to turn normal lubricants into residue.
Ordinary soap-based greases have a melting point. Once that point is crossed, they thin, bleed or carbonise, and the metal they were meant to protect starts to suffer. Pal Thermoguard 500 from Palco is a clay-base (inorganic) high temperature grease built for exactly this kind of extreme-heat duty. This article explains, in plain language, what it is, how it works, and where it fits best.
What Is Pal Thermoguard 500? A Non-Melting Clay-Based Grease for Extreme Heat
Pal Thermoguard 500 is a high-temperature industrial grease made by Paras Lubricants Limited under the PALCO brand. It is copper-brown in appearance and is formulated as a furnace grease, oven grease, and kiln-car grease.
Its performance comes from a carefully chosen recipe:
- Inorganic (clay) thickener, which does not melt the way soap thickeners do, so the grease stays in place even when the temperature climbs into the hundreds of degrees
- High-viscosity base oil (460 cSt at 40°C), which continues to lubricate under severe heat
- Oxidation and corrosion resistance, so the grease does not break down or leave harmful residues as quickly
- Shock-load absorption and fretting-corrosion protection, which help parts that see vibration or repeated small movements
The result is a grease designed to keep moving parts protected in environments where most conventional greases would already have melted or carbonised.
Pal Thermoguard 500 is an NLGI 1/2 grade. Its key published characteristics are:
- Appearance: Copper brown
- Worked penetration (60 strokes): 280–310
- Drop point: Non-melt
- Water washout: 2.8% max
- Operating temperature range: –10 to 500°C
- Thickener: Inorganic
- Corrosion prevention: Pass
How This Clay-Base Grease Works
A clay-base grease looks much like any other grease in the tub. The difference shows up when the temperature rises far beyond what soap greases can tolerate. Here is how the Pal Thermoguard 500 does its job, without the jargon.
Soap grease vs clay-base grease, in one line
A soap thickener (lithium, calcium, etc.) has a melting point; a clay (inorganic) thickener does not melt in the same way, so the grease stays structured at extreme heat.
That is why non-melting clay-base greases are chosen for furnaces, kilns, and ovens. In Pal Thermoguard 500, the inorganic thickener is what allows the published operating range of –10 to 500°C and the “non-melt” drop-point result.
What “non-melt” means, in one line
Drop point is the temperature at which a grease turns liquid enough to drip in a lab test; a non-melt grease does not show that behaviour within the test limits.
Pal Thermoguard 500 is listed as non-melt. Its published operating temperature range of –10 to 500°C is the figure to plan around.
Does not carbonise, in one line
Carbonising means the grease burns or breaks down into hard carbon residues that can seize or abrade parts.
Palco states that Pal Thermoguard 500 does not carbonise even at high temperature, which helps keep furnace doors, kiln-car bearings and oven racks free-moving.
Water washout, in one line
Water washout resistance is about grease surviving water flowing over it.
Pal Thermoguard 500 shows a maximum water-washout loss of 2.8% by weight, so it can tolerate incidental moisture while its main job remains extreme-heat protection.
Key Features and Benefits of Pal Thermoguard 500
Stays in place when the heat is extreme
The inorganic thickener and high-viscosity base oil give exceptional thermal and mechanical stability. For kiln cars, furnace door hinges and continuous ovens, that stability is the whole point.
Does not carbonise at high temperature
Unlike many greases that leave hard deposits once they overheat, Pal Thermoguard 500 is formulated so it does not carbonise. That reduces the risk of seized hinges, stuck racks, or blocked clearances.
Works in hostile chemical environments
The grease is described as suitable for hostile chemical environments, which is useful around certain industrial processes, tyre moulds and related equipment.
Absorbs shock loads and protects against fretting
High shock-load absorption and excellent fretting-corrosion protection help parts that see vibration, repeated small movements or intermittent heavy loads.
Resists oxidation and corrosion
Oxidation and corrosion resistance, plus a pass result in the corrosion-prevention test, help the grease and the metal surfaces last longer under prolonged heat.
Where Pal Thermoguard 500 Works Best
Kiln cars
Kiln-car wheel bearings and related points travel through high-temperature zones for long periods. The non-melting character of Pal Thermoguard 500 makes it a direct fit.
Furnace door hinges
Furnace doors open and close repeatedly while remaining hot. A grease that stays in place and does not carbonise keeps the hinges free.
Oven racks
Continuous or batch ovens expose racks and rollers to sustained high heat. The grease is recommended for these applications.
Tyre moulds
Tyre moulds see elevated temperatures during curing. Pal Thermoguard 500 is listed for this duty.
Other uses
The product page also lists discs, washers, spark plugs, battery terminals, and use as a chisel paste in pneumatic jackhammers. These are secondary applications where extreme heat or fretting can appear.
For routine vehicle bearing and other standard automotive lubrication needs, explore PALCO’s automotive grease range.
High Temperature Grease Supplier in India: Why Choose PALCO?
Looking for a high temperature grease supplier in India? PALCO supplies Thermoguard 500 for kiln cars, furnace door hinges, oven racks, and other high-heat applications. Available in 1 kg, 18 kg, and 180 kg packs, it supports both maintenance requirements and bulk procurement. Contact PALCO’s team for product details and business enquiries.
Paras Lubricants Limited was incorporated in 1985 and brings more than 41 years of experience in lubricants. Its head office is in Delhi; it has a western office in Mumbai, and its lubricants are manufactured at its plant in Daman.
Today, Palco offers more than 1,500 products across automotive oils, industrial oils, greases, and auto care, and exports to more than 25 countries. Its manufacturing follows ISO 9001-certified quality management systems, and every batch is checked in Palco’s in-house R&D lab before dispatch.
Pal Thermoguard 500 is available in 180 kg, 18 kg, and 1 kg packs, covering everything from a large plant’s central stores to a small maintenance kit. Palco’s engineers can also recommend the right grade and pack size for a specific application.
Practical Tips to Get the Most from Extreme-Temperature Grease
These general tips help any extreme-temperature grease deliver its full value. The equipment maker’s recommendations should always come first.
Choosing the right grease
Start with the equipment manual, then look honestly at the working conditions: peak and continuous temperature, whether the part is sealed or open, and how much shock or fretting is present. An NLGI 1/2 clay-base grease suits many high-heat points, but not every centralised system. When in doubt, sharing the details with Palco’s technical team is a sensible step.
Applying it correctly
- Check compatibility before switching from a soap-base grease, and purge out as much of the old grease as practical. Clay-base greases are generally not mixed with soap greases.
- Clean fittings and surfaces first so scale, dust, and old residue are not pushed into the part.
- Do not overfill. Overfilling can cause heat build-up even with a high-temperature grease.
- Make sure seals and covers are in good shape where they exist.
Storing it well
Keep containers tightly closed and store them in a cool, dry, covered place, well away from hot process areas. Wipe the lid before opening, use a clean scoop or pump, and use older stock first.
Keeping an eye on equipment
During routine checks, watch for parts that run hotter than usual, grease that has become hard or dry, and any signs of fretting or seizure. Adjust greasing intervals to the real heat exposure.
Extreme heat is a punishing condition for any lubricant. Pal Thermoguard 500 brings together an inorganic (clay) thickener, a high-viscosity base oil, oxidation and corrosion resistance, and a non-melting character to keep parts protected when temperatures reach levels that would destroy ordinary greases. For kiln cars, furnace door hinges, oven racks, tyre moulds and other extreme-heat points, Pal Thermoguard 500 is a clay-base high-temperature grease worth a closer look. Full details and the technical datasheet are available on the Pal Thermoguard 500 product page.
