Ultra Lapping Paste: The Precision Lapping & Honing Compound Every Engineer Needs

When precision matters — when parts must seal, slide, and fit perfectly — surface finish is everything. That’s where Ultra Lapping Paste, Moleroda’s UK-made precision lapping and honing compound, delivers unmatched value. Designed for engineers, restorers, and toolmakers, it’s a cost-effective alternative to Diamond Compounds that guarantees functionality and accuracy.

Ultra Lapping Paste is an oil-soluble abrasive compound formulated for lapping and honing applications in precision engineering. It’s designed to produce flat, smooth, and airtight surfaces, ensuring perfect mating between metal parts.

Available in a full grit range from 80 grit (coarse) through 1 micron (ultra-fine), this versatile compound can be used for everything from initial surface correction to final sealing.

Available sizes: 100g and 500g tubs
Grit range: 80–1200 grit (1 micron)
Abrasive types: Silicon carbide and aluminium oxide

Ultra Lapping Paste - Range of Grades & Sizes

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Abrasives

Ultra Lapping Paste — Precision Lapping & Honing Compound (80–1200 grit)

incl VAT

Unlike Diamond Compounds, which are often chosen for cosmetic mirror finishes, Ultra Lapping Paste focuses on function over finish. It’s engineered for performance where flatness, seal, and precision are critical — not just shine.

Key Advantages

Precision performance: Achieves 100% flatness and airtight seals on metal components.
Cost-effective: A fraction of the price of Diamond Compounds, without compromising function.
Versatile: Suitable for use with lapping pads, wood, felt tools, or direct component-to-component lapping.
Lubrication-ready: Combine with Lapping Fluid for smoother performance and longer tool life.
UK-manufactured: Consistent quality, reliable supply, and reduced lead times.

Ultra Lapping Paste is used across industries that demand precision and reliability. Common uses include:

Automotive & Motorbike Restoration: Camshafts, pistons, valves, and injectors.
Hydraulic & Pneumatic Assemblies: Creating airtight sealing surfaces.
Toolmaking & Engineering: For flatness in hardened steels, chrome plating, and non-ferrous metals.
Model Engineering & Hobbyist Applications: Where precision mating surfaces are key.

Wherever a tight seal or smooth movement matters, Ultra Lapping Paste makes the difference.

Grade Range	Application	Purpose
80–220 (Coarse)	Fast stock removal	Correcting out-of-flat surfaces
240–600 (Medium)	Refining	Preparing for final finish
800–1 micron (Fine)	Final sealing	Achieving smooth, precision fits

Pro tip: Start coarse to correct and remove imperfections, then step down through finer grades to achieve the ideal seal or movement.

Clean all surfaces thoroughly to remove dirt and residues.
Apply a thin, even layer of paste to one surface.
Lap or hone using controlled pressure with a felt, wood, or component tool.
Add Lapping Fluid to improve lubrication and reduce friction.
Progress from coarse to fine grades, cleaning between each stage.
Finish with an ultra-fine grade for perfect sealing and movement.

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TIP: Ultra Lapping Paste can be used to polish with hand tools as well as reciprocating lapping tools.

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Feature	Ultra Lapping Paste	Diamond Compound
Finish Type	Functional precision	High cosmetic polish
Cost	£	£££
Applications	Engineering, restoration	Polishing, fine finishing
Abrasive Type	Silicon carbide / Aluminium oxide	Diamond
Best For	Flatness & sealing	Mirror finishes

If your goal is precision fit and reliable function — not just aesthetic polish — Ultra Lapping Paste is the smarter choice.

Whether you’re rebuilding an engine, fine-tuning mating surfaces, or finishing precision parts, Ultra Lapping Paste delivers consistent, repeatable results every time.

It’s the engineer’s choice for functional flatness, airtight seals, and cost-effective precision — proudly made in the UK.