Photo 1

Pneumatic seal K52 12x16,5x3,7/4 PU

CodeK52-012 PU
In stock26pcs
Priceexcl. VATFrom PLN 6.73/pcs
Pneumatic seal K52 12x16,5x3,7/4 PU—
PLN 6.73excl. VAT

Price by quantityexcl. VAT

Available for registered usersSign in or create an account

Technical data

Properties
Seal typeK52
Material typePU
BrandKastas
Weight1g
Pneumatic seals dimension
Rod diameter d12mm
Bore Diameter D16,5mm
Width 13,7mm
Width 24mm

Description

Ring K52-12x16,5x3,7/4 PU is a single-acting pneumatic rod seal made of polyurethane (PU). The profile has a shorter inner (dynamic) lip than the outer (static) lip, which gives a correct fit in the pneumatic cylinder's housing and stable operation. The K52 profile has a precisely shaped sealing lip edge that seals dynamically with low friction and minimal resistance to motion. The polyurethane is highly resistant to abrasion, mechanical wear and compression set, so the seal can be fitted easily in the closed grooves of pneumatic cylinders. Technical data and dimensions: Rod diameter (d): 12,0 mm Outer diameter / groove (D): 16,5 mm Ring height (h): 3,7 mm Groove height (H): 4,0 mm In inches (d × D × h/H): 0.472" × 0.650" × 0.146" / 0.157" Material: PU (polyurethane) Profile type: K52 Application: rod seal in pneumatic cylinders Medium: compressed air (dry or lubricated)

Material

PU / TPU / H-PU (polyurethane)

  • Standard PU / TPU-30 °C to +80 °C

Best for high pressure and abrasion, in mineral hydraulic oil. Standard PU must never meet hot water, steam or brake fluid, or run hotter than +90 °C.

Chemical resistance
Can be usedDo not use
Extreme pressure and pulsation (up to 40-50 MPa, very resistant to extrusion into the gap)Hot water and steam with standard PU: hydrolysis, it breaks down into powder
Abrasion, friction, cutting and tearing (4-5 times tougher than NBR)Glycol brake fluid (DOT 3, DOT 4, DOT 5.1): swells quickly
Mineral hydraulic oil (HL, HLP) and greaseHigh temperatures above +90 to +100 °C with standard TPU: it softens
Fuel oil, diesel and technical oils (aliphatic hydrocarbons)Strong (concentrated) acids and alkalis: sulfuric, nitric, caustic soda
Ozone, weather and sunlight (does not crack from weather)Acetone, MEK, toluene, benzene, dichloromethane (polar and aromatic solvents)
Water-based fire-resistant fluids HFA, HFB (only special H-PU)Synthetic ester oils and fire-resistant fluid HFD-R
Dry compressed air and technical gasesStrong alcohols (methanol, ethanol): swelling

Water and heat destroy standard PU: above +50 to +60 °C in water or damp oil it turns into a sticky paste or crumbles. If the system contains water or an emulsion, use only H-PU (hydrolysis-resistant).

We recommend: Industrial chemicals

View all

We recommend: Tools

View all