Product Description
Neolube® No. 1260 is a high-performance paste and a high-temperature anti-seize compound, composed of nuclear-grade graphite and a nuclear-quality petroleum-based carrier. This sealant/lubricant exhibits all the characteristics necessary for long-life performance, even under the most severe conditions, including critical service applications up to 635°C (1175°F) and 16 MPa (2300 psi). The purity level of Neolube® No. 1260 allows it to meet the stringent certification requirements of the nuclear power generation industry, such as the General Electric nonmetallic material specification D50YP12 Rev 2.
Neolube® No. 1260 is recommended for use to seal small diameter, close-tolerance threaded pipe joints in critical service. It is also an ideal replacement for Teflon® Thread Sealant Tape* and other conventional thread sealant materials in high-temperature and high-pressure applications.
Applications and Benefits
Neolube® No. 1260 thread sealant paste can be used as an effective bolt lubricant or anti-seize compound, having outperformed conventional lubricants under tests. Joints sealed with Neolube® No. 1260 are easy to disassemble, even after years of high-temperature service, because the paste does not harden or cure. Neolube® No. 1260 is packaged in a 1.69-ounce squeezable tube to protect against contamination.
When used at temperatures above 255°F, the petroleum-based carrier starts to volatilize. However, the graphite component remains present and effective up to 1175°F. Weight loss begins around 255°F, with a 6% weight loss observed at 390°F, allowing good lubricating properties to persist up to 390°F for a significant period of time.
Neolube® No. 1260 is acceptable for use in ethylene oxide service but is not compatible with oxygen service, as the oils could flash at high temperatures. It is compatible with Nitrile and Viton gasket materials but should not be used with gaskets made from EPDM, Silicone, or Neoprene.
Material Compatibility
The following classes of organic chemicals are incompatible with Neolube® No. 1260 due to their highly oxidizing nature:
- Nitrates
- Persulfates
- Perbenzoates
- Peroxides
These chemicals can be used if the concentration is low (several percent) and the temperature is near room temperature. However, even small concentrations of an oxidizing organic are incompatible if an acid is present. Inorganic chemicals that are incompatible include molten sodium or potassium hydroxide and chlorine dioxide.
Nuclear Radiation Resistance
- Exposure Level 1: 5.5 x 1021 NVT @ 1000°C – No apparent effect
- Exposure Level 2: 1.5 x 109 RADS Gamma Radiation (1.5 x 1011 ERGS/GRAM) – No apparent effect
Source: Oak Ridge National Laboratory (1978) – Integrated Neutron Flux: N=neutrons per cc, V=cm/sec, T=Seconds
Purity Level
- Total Halogen (as Cl): <25 ppm (450 ppm max)
- Leachable Chloride: <10 ppm (50 ppm max)
- Total Chlorine: <10 ppm (500 ppm max)
- Total Fluorine: <25 ppm (300 ppm max)
- Total Nitrite: <1 ppm (1 ppm max)
- Total Nitrate: <10 ppm (820 ppm max)
- Total Sulfur: <150 ppm (630 ppm max)
- Embrittling Metals: <250 ppm (500 ppm max, no single metal >200 ppm)
Typical Properties
- Color: Black/Gray
- Toxicity: Low
- Carbon Content: 99.5% minimum
- Flash Point: 320°F (C.O.C.)
- Liquid Carrier: Mineral Oil/Petrolatum Paste
- Consistency: Thick paste
- Service Temperature: Up to 1175°F (635°C)
- Pressure Resistance: 2300 psi (16 MPa)
- Pipe Size Limitations: ≤2″ (50.8 mm OD close-fitting threaded joints)
- Storage: Store at or below 38°C (100°F)
- Shelf Life: Minimum two years from date of first use
Directions for Use
- Thoroughly clean threaded surfaces before application.
- Knead the tube well. Snip the cap, squeeze out any air, place the cap back on tightly, and knead thoroughly.
- Apply paste evenly, filling threads completely. Carefully assemble and tighten the threaded joint.
- Close cap tightly after use.
- The joint is ready for immediate use.
Additional Benefits
Neolube® No. 1260 has high chemical purity, excellent thermal stability, low halogen content, and excellent radiation resistance, making it advantageous for critical service applications. It is flexible, conformable, and resilient. Once applied, it molds into challenging spaces, filling irregularities to create a superior seal that remains effective in harsh environments. Neolube® No. 1260 also exhibits virtually no gasket sealant creep relaxation, reducing the need for periodic bolt tightening.
Disclaimer
Information provided is based on reliable sources but is not guaranteed. Users are responsible for determining the product’s suitability. Neolube® is a registered trademark of Huron Industries, Inc. *Teflon® is a registered trademark of the DuPont Company.