描述
Krytox XHT-EP298 Grease is an extreme high-temperature PFPE (perfluoropolyether) grease from Chemours’ Krytox performance lubricants portfolio, genuinely manufactured by Chemours and imported as original product. As an authorized distributor and trader, we supply genuine material with full traceability and direct access to official Chemours technical documentation. For more product options and company information, please visit our website at https://szrqchem.com/.
Krytox XHT-EP298 Grease is a high-performance lubricant based on PFPE oil with a PTFE non-melting thickener. It is an extreme-pressure grease formulated for high-temperature applications that need both high load-carrying capacity and anticorrosion protection in environments where rust may develop.
While most petroleum-based products degrade below 99°C (210°F), Krytox XHT-EP298 Grease operates continuously from -15°C to 294°C (5°F to 560°F). The grease is nonflammable, chemically inert, and nonreactive, resulting in zero chemical reactivity. As such, it is compatible with most metals, plastics, and elastomers.
Krytox XHT-EP298 Grease is not FDA compliant (not NSF H-1 registered) and is not intended for food contact applications. It is specially formulated for high-temperature, extreme-pressure industrial applications where both high load-carrying capacity and corrosion protection are required.
Key Features of Krytox XHT-EP298 Grease
-
Extreme Pressure (EP) Additives – Formulated with high-pressure additives for excellent load-carrying capacity and metal-to-metal protection under heavy loads
-
Anti-Corrosion Protection – Provides anticorrosion protection in moist conditions and environments where condensation and rusting may occur
-
Extreme High-Temperature Performance – Continuous operation from -15°C to 294°C (5°F to 560°F)
-
Non-Melting Thickener – PTFE thickener maintains grease consistency at high temperatures
-
Nonflammable & Oxygen-Compatible – Contains no hydrogen; safe for oxygen service and systems exposed to reactive chemicals
-
Chemically Inert & Nonreactive – Completely inert, resulting in zero chemical reactivity
-
Excellent Material Compatibility – Compatible with most metals, plastics, and elastomers
-
High Viscosity Base Oil – 738 cSt at 40°C provides excellent viscosity retention at high temperatures
-
Anti-Wear Protection – Provides excellent wear prevention under extreme conditions
-
Wide Temperature Range – Suitable for both low and high temperature extremes
-
ISO Grade 680 – High viscosity grade for demanding applications
Typical Applications for Krytox XHT-EP298 Grease
| Industry | Typical Components & Considerations |
|---|---|
| Conveyor Chains | Conveyor chains subjected to moist conditions or frequent temperature cycling that could allow condensation and rusting to occur |
| Bearings | High-temperature bearings requiring extreme pressure and corrosion protection |
| Valves | Valve lubrication in extreme temperature and pressure environments |
| Oxygen Service | Systems exposed to oxygen or reactive chemicals |
| High-Temperature Equipment | Extreme-high-temperature equipment in demanding industrial environments |
| Fasteners | Lubrication of fasteners in corrosive or high-temperature environments |
| O-Rings | O-ring protection in extreme conditions |
| Wet or Temperature-Variable Conditions | Applications where condensation leads to rusting |
Material Advantages
Krytox XHT-EP298 Grease is a high-performance PFPE grease that delivers:
-
Extreme Pressure Performance – Formulated with high-pressure additives, the 29X series shows improvement in load carrying and wear prevention over standard Krytox greases. It provides excellent metal-to-metal protection under heavy load
-
Anti-Corrosion Protection – Provides superior corrosion control and prevention in moist conditions and temperature-cycling environments where rust may develop
-
Unmatched High-Temperature Capability – Continuous operation up to 294°C (560°F), far exceeding the capabilities of conventional greases
-
Non-Melting Stability – PTFE non-melting thickener maintains grease consistency at high temperatures
-
Inherent Safety – Nonflammable, chemically inert, and nonreactive, making it safe for use in oxygen service and reactive chemical environments
-
Extended Service Life – High viscosity and thermal stability reduce the need for frequent relubrication, lowering maintenance costs and downtime
-
Excellent Material Compatibility – Compatible with most metals, plastics, and elastomers
-
High Viscosity Retention – The 738 cSt base oil provides excellent viscosity at elevated temperatures
-
Versatile Applications – From lubricating fasteners to protecting O-rings and much more
-
Proven Performance – Part of the GPL 294–297 and XHT-EP298–299 series formulated for high-temperature applications requiring both high load carrying capacity and anticorrosion protection
Chemours, as the inventor of Krytox, brings decades of PFPE lubricant expertise, ensuring batch-to-batch consistency, reliable supply, and full technical support.
Typical Properties
| Property | Krytox XHT-EP298 Grease | Unit / Remarks |
|---|---|---|
| Product Type | PFPE Extreme High-Temperature Extreme Pressure Grease | – |
| Appearance | White / Creamy | – |
| NLGI Grade | 2 | – |
| ISO Grade | 680 | – |
| Base Chemistry | PFPE (Perfluoropolyether) | – |
| Thickener Type | PTFE (non-melting) | – |
| Base Oil Viscosity @ 20°C | 2,560 cSt | – |
| Base Oil Viscosity @ 40°C | 738 cSt | – |
| Base Oil Viscosity @ 100°C | 65 cSt | – |
| Oil Viscosity Index | 158 | – |
| Oil Pour Point | -15°C (5°F) | – |
| Estimated Useful Range | -15°C to 294°C (5°F to 560°F) | – |
| Food Contact Approval | No – Not NSF H-1 registered | – |
| Additives | High pressure and anticorrosion | – |
| CAS Number | 28474-30-8 | – |
| Packaging | 57 g syringe; 2 oz, 8 oz tubes; 0.5 kg, 1 kg jars; 5 kg, 20 kg pails | – |
| Country of Origin | USA | – |
Important Notes on Typical Data:
-
Values listed are typical and sourced from Chemours official data sheets. They do not constitute binding product specification.
-
Batch-to-batch deviations may exist. For critical applications, validate performance with batch-specific COA certificate.
-
Final performance depends on application conditions, operating environment, and relubrication intervals.
-
Chemours official TDS shall serve as definitive technical reference. Request the latest official TDS from our sales team.
XHT-EP298 vs XHT-EP299 Comparison
| Property | XHT-EP298 | XHT-EP299 |
|---|---|---|
| ISO Grade | 680 | 1000 |
| Estimated Useful Range | -15°C to 294°C | -5°C to 300°C |
| Base Oil Viscosity @ 20°C | 2,560 cSt | 3,500 cSt |
| Base Oil Viscosity @ 40°C | 738 cSt | 1,005 cSt |
| Base Oil Viscosity @ 100°C | 65 cSt | 85 cSt |
| Oil Viscosity Index | 158 | 166 |
| Oil Pour Point | -15°C | -5°C |
| Key Feature | Standard high-viscosity EP | Highest viscosity EP |
Processing & Application Guidelines
| Consideration | Details |
|---|---|
| Application | Apply to clean surfaces. Grease should be applied using standard grease application equipment (grease gun, automatic lubricators, or manual application). Ensure surfaces are free from contaminants before application |
| Temperature Range | Designed for continuous operation up to 294°C (560°F); suitable for temperature cycling environments |
| Moisture Protection | Provides anticorrosion protection in moist conditions and environments where condensation may occur |
| Oxygen Service | Safe for oxygen service and systems exposed to reactive chemicals |
| Storage | Store in original, sealed containers in a cool, dry place away from direct sunlight |
| Shelf Life | Extended shelf life; refer to product packaging for specific expiration date |
Critical Application Warnings:
-
Not for Food Contact: Krytox XHT-EP298 Grease is not FDA compliant (not NSF H-1 registered). Do not use in applications requiring food-grade lubricants.
-
Extreme Pressure Use: Formulated for high load-carrying capacity applications. Excellent for conditions requiring both extreme pressure and corrosion protection.
-
Temperature Considerations: While the grease can withstand temperatures up to 294°C continuously, always verify with actual operating conditions.
-
Surface Preparation: Ensure clean application surfaces to maximize lubricant adhesion and performance.
-
Material Compatibility: Compatible with most metals, plastics, and elastomers. However, always verify compatibility with specific materials in your application.
Related Products
-
Explore Krytox XHT Series – Browse all Krytox XHT extreme high-temperature lubricants
-
Explore Krytox Lubricants – Browse all Krytox performance lubricant options
-
About Our Company – Learn more about our supply capabilities and quality assurance
Technical Documents
| Document Type | Description & Source |
|---|---|
| Chemours Official TDS | Complete physical, thermal, and mechanical properties of Krytox XHT-EP298 Grease, issued by Chemours original |
| Chemours Official SDS | GHS-compliant chemical safety documentation, original Chemours document |
| Chemours Distributor Authorization Certificate | Proof of our authorized-distributor qualification for Chemours Krytox series, available upon request |
| COA (Certificate of Analysis) | Batch-specific quality certification |
Request any document above by:
-
Email:
ruiqingchem@gmail.com -
Online form: Our contact page
We reply within one working business day. Please clearly state product (Krytox XHT-EP298 Grease) and document type you require.
FAQ
Q1: What is Krytox XHT-EP298 Grease and what is it used for?
A: Krytox XHT-EP298 Grease is an extreme high-temperature PFPE grease from Chemours formulated with extreme pressure (EP) and anticorrosion additives. It provides continuous operation from -15°C to 294°C (5°F to 560°F) and is widely used in conveyor chains subjected to moist conditions or frequent temperature cycling, high-temperature bearings, valves, oxygen service, fasteners, O-rings, and other extreme industrial applications.
Q2: What is the NLGI grade of Krytox XHT-EP298 Grease?
A: Krytox XHT-EP298 Grease has an NLGI grade of 2.
Q3: What is the base oil viscosity of Krytox XHT-EP298 Grease?
A: The base oil viscosity is 738 cSt at 40°C and 65 cSt at 100°C. At 20°C, the viscosity is 2,560 cSt.
Q4: What is the ISO grade of Krytox XHT-EP298 Grease?
A: The ISO grade is 680.
Q5: What additives does Krytox XHT-EP298 Grease contain?
A: Krytox XHT-EP298 Grease contains high pressure (extreme pressure) and anticorrosion additives.
Q6: Is Krytox XHT-EP298 Grease NSF H-1 registered for food contact?
A: No. Krytox XHT-EP298 Grease is not NSF H-1 registered and is not approved for food contact applications.
Q7: Is Krytox XHT-EP298 Grease flammable?
A: No. Krytox XHT-EP298 Grease is nonflammable, chemically inert, and nonreactive. It is safe for oxygen service.
Q8: What is the maximum operating temperature of Krytox XHT-EP298 Grease?
A: Continuous service up to 294°C (560°F).
Q9: What is the difference between XHT-EP298 and XHT-EP299?
A: XHT-EP299 has a higher ISO grade (1000 vs 680), higher base oil viscosity (1,005 cSt vs 738 cSt at 40°C), higher viscosity index (166 vs 158), and a higher temperature range (-5°C to 300°C vs -15°C to 294°C).
Q10: What is the difference between XHT-EP298 and XHT-AC/ACX?
A: XHT-EP298 contains extreme pressure (EP) additives and is designed for high load-carrying capacity applications. XHT-AC and XHT-ACX are formulated primarily for anti-wear and rust protection without extreme pressure additives. XHT-EP298 is not NSF H-1 registered, while XHT-AC and XHT-ACX are NSF H-1 registered.
Q11: What packaging options are available for Krytox XHT-EP298 Grease?
A: Available in 57 g syringe; 2 oz and 8 oz tubes; 0.5 kg and 1 kg jars; as well as 5 kg and 20 kg pails.
Q12: What is the shelf life of Krytox XHT-EP298 Grease?
A: Krytox XHT-EP298 Grease has an extended shelf life when stored in unopened, proper conditions. Refer to product packaging for specific expiration dates.
Q13: What is the CAS number of Krytox XHT-EP298 Grease?
A: The CAS number is 28474-30-8.
Q14: What is the lead time for orders?
A: Regular orders ship within 7-10 working days after payment confirmation. Large-volume or urgent orders can be negotiated separately.
CTA (Call to Action)
Ready to order Krytox XHT-EP298 Grease?
To get a precise quotation and professional technical support, please share:
-
Required quantity (kg)
-
Destination port or delivery address
-
Target application (conveyor chains, bearings, valves, oxygen service, etc.)
-
Operating temperature range
-
Packaging preference (syringe, tube, jars, or pails)
-
Document requirement (TDS, SDS, COA, etc.)
Sample Policy:
-
Samples are for laboratory validation tests only, not for production use.
-
Buyer bears international sample-shipping freight.
-
If bulk-product performance deviates from sample reference, Chemours official TDS serves as the authoritative benchmark.
Take action now:
-
📧 Email Us –
ruiqingchem@gmail.com -
📝 Send Inquiry – Use our quick inquiry form
-
💬 Live Chat – Click the bottom-right chat widget to speak directly with our team
After-Sales Support
| Service | Details |
|---|---|
| Quality Inspection Period | All quality-related claims must be submitted within 7 working-days after delivery, supported by test data and photographic evidence. |
| Return / Exchange Policy | Confirmed product defects caused by our side trigger replacement or refund. Terms and conditions apply. |
| Logistics Damage | Report shipping damage directly to carrier immediately upon goods receipt. We assist with claim-document preparation. |
| Technical Support | Remote technical guidance available. On-site troubleshooting can be arranged upon special request. |
| Export Documentation | We supply commercial invoice, packing list, bill of lading, COA, and additional compliance certificates on request. |
Disclaimer
DISCLAIMER: All technical data is referenced from original Chemours typical values for Krytox XHT-EP298 Grease. Our company acts as authorized distributor/trader rather than original manufacturer. Final performance depends on application conditions, operating environment, and maintenance practices. Buyers shall independently validate product suitability for individual applications. Our firm bears no liability for lubricant failure caused by improper application or improper usage. Always reference the latest Chemours official TDS of Krytox XHT-EP298 Grease as the definitive specification.
