Supply scope
Filters, gasket sets, seals and service items we can structure into an RFQ.
Useful coverage for scheduled service, overhaul planning and time-critical replacement work. The groups below are how a request is broken up for review, not a warehouse index: one overhaul list normally crosses four or five of them.
01Filter elements
Replacement filter elements for engine-room and auxiliary equipment systems. Two elements can share a nominal size and still differ in the filtration rating, in the media — paper, resin-impregnated cellulose, sintered or wire-wound metal, glass fibre — and in whether they are cleanable or disposable. Read the rating off the housing plate or the old element. A strainer screen given as a mesh number converts to an opening in microns in the mesh to micron converter. A rating given as a beta ratio or in microns absolute or nominal is read by the filter rating reader.
02Gasket sets
Gasket sets, overhaul gasket kits and equipment-specific sealing kits. A set is specified by the maker, the type and the job — a cover set, a top overhaul set, a strip-down set — and the set is usually the right unit to order: it fixes what the maker intends to be renewed together, and the gasket left off the list is the one that weeps on restart.
03O-rings
O-ring sets and individual sealing items by dimensions, material and equipment reference. Three figures and a compound settle most of them without a part number: inside diameter, cord section, and the groove the ring has to fill. The O-ring size finder names the ring from its inside diameter and cord section. The compound matters more than the figures: on anything touching fuel oil, lube oil or hot water the elastomer decides whether the ring holds or swells, hardens and extrudes. Nitrile, fluorocarbon, EPDM and silicone are not interchangeable.
04Mechanical seals
Mechanical seal assemblies and shaft sealing components for pumps and machinery. Three different things get called a shaft seal, and they are ordered differently. A lip seal, or radial oil seal, is one moulded item with a spring behind the lip, described by shaft size, bore, width and compound; the oil seal size and type reader reads a marking such as 25x40x7 AS NBR in that order. Gland packing goes by section and length, with the ring count and lantern-ring position. A mechanical seal is an assembly — faces, elastomers, springs, a drive arrangement — identified by the seal maker and its own type code, stamped on the seal or given in the pump manual or drawing, not by the pump nameplate. How those codes read for EagleBurgmann, John Crane, AESSEAL and Vulcan is set out on their own pages. Say which of the three you hold.
05Oil filters
Lube oil and hydraulic oil filter items by maker, model and filter reference. Duplex and automatic backflushing units cause most of the confusion: one housing accepts a family of elements sharing an envelope, and the right member is set by the rating and the media, not by which one drops in. On an automatic unit the type number on the housing plate decides the gaskets and control parts as well as the element; the Boll & Kirch page shows how that reads on one maker's range.
06Fuel filters
Fuel filter elements, separators, strainers and fuel-system filtration parts. On the fuel side the compound decides everything downstream: seals, gaskets and end caps that hold on distillate can soften on heavy fuel, so a change of bunker grade is a reason to state the fuel. A water-separating element is ordered with its bowl seals.
07Hydraulic filters
Hydraulic filter elements and system-specific filtration consumables. Say where in the circuit the element sits: pressure-line, return-line and off-line elements of similar size are built for different collapse loading and are not substitutes. Steering gear, hatch covers and deck machinery each carry their own housings, and the element is read against the plate of that unit.
08Service kits
Grouped service kits for planned maintenance and multi-item RFQ lists. A kit reference is worth more than its contents listed loose. It is also where stores codes stop helping: an IMPA or ISSA code covers the general stores half of this page — gasket sheet, O-ring assortments, gland packing, fasteners, hoses — and identifies no element, kit or seal belonging to a named machine. Send it with the description, never instead of maker, type and serial.
