Description
Klüber UNISILKON L 250 L 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.
- Temperature range: -45°C to +160°C
- Volume: 500g
- Also available in: Cartridge 500g, Can750 g, Bucket 30kg
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
Applications
- UNISILKON L250L 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 L250 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 L250 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.
Technical specifications
| Article number | 0221020594 |
| 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
KLÜBER LUBRICATION MÜNCHEN GMBH & CO. KG, Geisenhausenerstraße 7, 81379 München, GERMANY, +49 89 7876 0, [email protected], www.klueber.com
aurelie75 –
Solved my problem completely! A friend recommended it to me and I’m thrilled with the purchase.
Simona –
The quality surprised me in a good way. Looks even nicer in real life. Solved my problem completely!
Marine P. –
The quality pleasantly surprised me.
Jules M. –
Great customer support.
Lily V. –
The quality pleasantly surprised me.
pascal75 –
Everything as expected. Better quality than I expected.
clement88 –
Good build quality and reliable. Super practical.
Emily E. –
Very effective; I noticed a change in just one week. Not too big, not too small, just perfect. Been using it for 2 weeks and already see results! Better than anything I’ve tried so far.
andreas_s –
Everything as expected. Price matches the quality.