Klüber Unisilkon L 250 L Grease for valves and fittings NSF H1 750g

Special lubricating grease for drinking water, beverage and heating valves and fittings.

UNISILKON L 250 L is a special lubricant based on silicone oil and PTFE with high thermal stability. UNISILKON L 250 L offers good penetration ability in small lubrication gaps and lube points of difficult access. Owing to its relatively high viscosity, adhesion is improved even in case of unfavourable geometries.
UNISILKON L 250 L is resistant to cold and hot water, superheated steam up to approx. 130 °C as well as industrial cleaning agents and disinfectants. UNISILKON L 250 L is also resistant to pumpable foodstuffs and beverages like fruit juices, beer or milk products. UNISILKON L 250 L is not resistant to
organic solvents or strong acid and alkaline solutions.
UNISILKON L 250 L is NSF H1 registered and therefore complies with FDA 21 CFR § 178.3570. The lubricant was developed for incidental contact with products and packaging materials in the food-processing, cosmetics, pharmaceutical or animal feed industries. The use of UNISILKON L 250 L can contribute to increase reliability of your production processes.
We nevertheless recommend conducting an additional risk analysis, e.g. HACCP.

Benefits for your application:

• Proven effective in valves and fittings as well as adjusting mechanisms in the drinking water, beverage, sanitary and heating sectors
• Certified acc. to international standards for valves and fittings, e.g. DVGW-KTW, WRAS, ACS, AS 4020, NSF Standard 61 and NSF H1
• Long-term protection of seals and bearings owing to the lubricant’s good resistance to numerous media like disinfectants, cleaning agents, water, steam

Application:
UNISILKON L 250 L is used as lubricating and sealing grease for:

• domestic valves & fittings for drinking water, (e.g. ceramic discs and piston cartouches, thermo regulators). As the lubricant’s viscosity is rather independent of service temperatures, UNISILKON L 250 L allows constant actuating forces within the whole cold/hot water range of e.g. single-lever mixer taps.
• valves and fittings of heating installations (e.g. thermoregulators, tap cocks, pressfit seals)

UNISILKON L 250 L has also proven effective as assembly aid for radial shaft seals and packings in contact with cold or hot water and steam.

Application notes:
UNISILKON L 250 L is neutral towards most metals, thermoplastics and elastomers. Owing to the many different elastomer and plastic compositions their  compatibility should be checked prior to series applications. UNISILKON L 250 L can be applied by means of spatula, brush, usual metering devices or the tampon printing method. Please observe the material safety data sheet.

Product data:

Article number	022102
NLGI grade, DIN 51818	3
NSF-H1 registration	141 714
Chemical composition, type of oil	methyl silicone oil
Chemical composition, solid lubricant	PTFE
Lower service temperature	-45 °C / -49 °F
Upper service temperature	160 °C / 320 °F
Color space	white
Texture	fibrous
Texture	homogeneous
Density at 20 °C	approx. 1.25 g/cm³
Worked penetration, DIN ISO 2137, 25 °C, lower limit value	220 x 0.1 mm
Worked penetration, DIN ISO 2137, 25 °C, upper limit value	250 x 0.1 mm
Shear viscosity at 25 °C, shear rate 300 s-1, equipment:rotational viscometer	approx. 13 000 mPas
Kinematic viscosity of the base oil, DIN 51562 pt. 01/ASTM D-445/ASTM D 7042, 25 °C	approx. 1 350 mm²/s
Copper corrosion, DIN 51811, (lubricating grease), 24h/100°C	1 - 100 corrosion degree
Water resistance, DIN 51807 pt. 01, 3 h/90 °C, rating	<= 1 - 90
Minimum shelf life from the date of manufacture - in a dry, frost-free place and in the unopened  original container, approx.	36 months

Klüber UNISILKON L250L, Klueber, Kluber UNISILKON L250 L, L 250L