Our products – leather pump parts.
Leather pump parts for piston and plunger pumps: piston cups, cup washers (cup‑leathers), valve leathers, cone cups and flat leather washers. We supply standard sizes and custom‑made parts to your drawing or sample, with short lead times.
Cueroval design and manufacture leather pump parts for piston and plunger pumps — leather piston cups, leather cup washers, valve leather discs and leather cone cups. Selected chrome‑tanned leathers provide reliable sealing with oils, water and many process fluids. The smooth finish and precise dimensional control ensure easy installation, low start‑up friction and stable operation.
Compared with rubber or plastics, leather offers a unique mix of strength, flexibility and wear resistance. It expands slightly under pressure, compensating for cylinder play and maintaining tightness even on lightly worn seats. That is why leather pump parts continue to deliver outstanding performance in agriculture, food & beverage, mining and industrial maintenance.
Leather pistons cups
Chrome‑tanned leather piston cups for piston and plunger pumps. We manufacture replacements for most brands (Ilemo Hardi, Mañez y Lozano, Abella, …).
- Self‑adjusting sealing lip: expands under pressure and compensates for cylinder clearance.
- Smooth pumping: reduced starting effort and steady flow.
- Tolerant to fine particles: proven performance in agricultural sprayers.
- OEM‑type sizes and profiles; custom manufacture to drawing or sample.
Leather cup washers
Leather cup washers for piston and plunger pumps. Produced from selected leather for long service life and reliable sealing in oils, water and process fluids. Also known as leather cup seals, leather piston cups or cup‑leathers.
- Robust sealing for reciprocating pumps
- Wide range of diameters and profiles
- Custom manufacture to drawing or sample
- Short lead times and volume pricing
Leather valve discs
Leather obturator discs for check/non‑return valves and alternative‑piston pumps. Smooth finish with tight seating, even on slightly worn seats.
- Progressive sealing: leather expands under pressure, ensuring tightness even with minor wear.
- High conformability: compensates micro‑scratches and small clearances better than rigid rubbers.
- Good abrasion resistance to fine particles (agricultural and industrial service).
Leather cone cups
Conical leather cup washers for non‑return/check valves. Smooth seating and progressive seal.
- Compliant, progressive seal that adapts to the seat
- Performs well with slight seat wear or minor misalignment
- Resistant to abrasion from fine particles
Materials & grades
All leather pump parts are made from selected chrome‑tanned hides and finished to suit the seat, fluid and duty cycle. We match the leather to your fluid (oil, water, process media) and temperature, maintaining homogeneity, thickness control and flatness. Finishing is adapted to the seal lip or contact surface.
- Diameters typically from 20 to 300 mm (other sizes on request).
- Thickness from 2 to 8 mm depending on profile.
- Profiles: flat, cupped, single‑lip and multi‑lip designs.
- Custom drilling, slots and center holes according to drawing or sample.
- Surface finish adapted to the seat (dry or pre‑oiled).
- Material choices by working fluid, temperature and duty cycle.
- Small batches, replacements and series production available.
All parts are produced in‑house with traceable leather grades and controlled processes.
Applications & sectors
Agriculture and irrigation, pumps and compressors, food and beverage, machinery rebuilds, industrial maintenance, and more.
Advantages of leather pump parts.
- Excellent sealing in oil and water
- Adaptability to surfaces and minor deviations
- Low friction and stable lip
- Custom geometries and short runs
- Good damping and vibration absorption
How we work
Drawings or samples welcome, fast prototyping, short lead times, from single pieces to periodic series, always with tight thickness and dimensional control.
Request a proposal
Send us your drawing, sample or basic dimensions together with the working fluid, pressure and operating temperature. Our team will propose the most suitable leather grade and finish for your pump. We ship worldwide and pack parts ready to install. Request a quote for leather pump parts and we will reply promptly.
