Product

O-Ring Kits

An O-ring kit is a pre-sorted assortment of the O-ring sizes used most often in a given field — general maintenance, automotive, plumbing or scuba equipment — organised into a labelled case so the right size is on hand without ordering single pieces per job.

Overview

Why a kit

Most repair and maintenance work only ever calls for a small, predictable set of O-ring sizes. A kit puts that working set in one labelled case instead of a drawer of loose bags, which is why kits are organised by the field they serve — an automotive/general kit follows AS568 or metric dash sizes, a scuba kit follows dive-equipment sizing, and a boss-seal kit covers the 900-series sizes used on straight-thread tube fittings.

Kits available

Kit types

Kit

AS568 Standard Kit

382 O-rings across the 30 most-used AS568 dash sizes, in labelled compartments with post a… — 70A Nitrile (NBR)

Kit

Metric Kit

386 O-rings across 30 metric sizes from 3mm to 40mm ID commonly used in industrial and aut… — 70A Nitrile (NBR)

Kit

Scuba Kit

Sized for dive-equipment service; supplied in NBR for one-time/rental use or FKM (Viton) f… — NBR or FKM (Viton)

Kit

Boss Seal Kit

212 pieces across the 20 most popular 900-series O-rings, used for sealing straight-thread… — 90A Nitrile (NBR)

Kit

Plumber's Kit

200 pieces across 12 popular sizes, fitting most major faucet manufacturers' models for pl… — Nitrile (NBR)

Materials

Which compound, and why

Material

NBR

The standard kit compound — general oil and fuel resistance for most repair work.

Material

FKM (Viton)

Scuba and other kits needing better UV, ozone and salt-water resistance than NBR.

Why Stock an O-Ring Kit

An O-ring kit provides immediate access to a range of standard sizes for maintenance, repair and field service without the lead time of ordering individual sizes. For maintenance workshops, mobile service vehicles and production lines, having the right O-ring available immediately can prevent hours or days of equipment downtime waiting for a special-order seal.

FITCO kits are organised by standard (AS568, Metric, JIS) and arranged in compartmentalised storage boxes with clear size labelling. Each box contains a defined number of pieces per size — typically 5 or 10 per compartment — chosen to cover the most commonly used sizes in each standard. Refill packs are available for individual sizes as they are consumed.