What to Send for a Quote

To start a quote, send:

The part number on the old element or on the filter housing’s nameplate, and its make.
A photo of the element with both end caps and the seal in view, beside a ruler. Send photos on WhatsApp to +91 99400 49505 or by email to [email protected].
Where it fits: a suction, pressure, return or offline filter, or a lube oil filter.
The fluid, and the micron rating if you know it.
How many you need, and by when.

What a Filter Element Does, and When to Change It

A filter element is the part of a filter that holds the dirt: pleated filter media, or a wire mesh, on a perforated core between two end caps. It keeps the particles that wear pumps, valves and bearings out of the oil.

As an element loads, the pressure difference across it rises. Many filters show this on a clogging indicator, and many have a bypass valve that then lets unfiltered oil past. Change the element when the indicator shows, at the interval in the machine’s instructions, or after a flush or a component failure. Read the indicator with the oil at working temperature, as cold, thick oil can show a false early warning. Dusty surroundings, worn cylinder rod seals or new oil put in unfiltered make an element load sooner.

Isolate the machine and release the pressure before you inspect or measure a filter. Let hot oil cool and drain the housing before you open it, following the filter maker’s instructions and your plant’s rules.

We are a supplier, not the maker.

Hydraulic Filter Element Types

Elements are built differently for each kind of filter. Each drawing shows one usual build, as a schematic, not to scale.

Pleated Cartridge Elements
Filter media pleated round a perforated inner core between two end caps, often inside a perforated outer wrap; the oil usually flows from outside to inside. Glass fibre media are generally used for fine filtration, cellulose (paper) for coarser duties. Used in pressure, return, offline and lube oil filters.
Tell us: the part number, or the length, both diameters and the seal.
Spin-on Filters
A sealed steel can with a pleated element inside, screwed onto a filter head by its threaded centre and sealed by a gasket; the whole can is changed, and some have a bypass valve inside. Used on mobile machines and small power packs.
Tell us: the part number, the thread size, the can’s diameter and height, and whether it has a bypass valve.
Suction Strainers and Mesh Elements
Stainless steel wire mesh on a frame or a perforated core, with a threaded or flanged end. A suction strainer sits on the pump’s suction pipe below the oil level, clear of the tank floor, and is coarse so as not to starve the pump. Mesh elements can often be cleaned and refitted, as their maker’s instructions allow.
Tell us: the mesh or micron rating if it is marked, the thread or flange, and the length and diameter.
Elements for Duplex Lube Oil Filters
Two housings under one changeover valve, so one side’s element can be changed while the other side filters; common on turbine, compressor and gearbox lube oil systems. Before you open a side, check that the changeover valve has moved fully across, and that the side is depressurised, drained and cool, following the filter’s instructions and your plant’s rules.
Tell us: the part number, how many elements each housing holds, and the oil.

Where Filters Sit in a Hydraulic System

1. Suction strainer: in the tank on the pump’s suction pipe; a coarse mesh that keeps large debris out of the pump.

2. Pressure filter: after the pump, guarding fine-clearance valves such as proportional valves. Many have no bypass valve, so their elements must withstand the full pressure difference when clogged.

3. Return filter: on the line back to the tank, holding the wear particles the machine makes; usually with a bypass valve and an indicator.

4. Offline filter: its own small pump circulates the tank oil through a fine element whether the machine runs or not (a kidney-loop filter).

Drawing: a hydraulic system with a suction strainer in the tank (1), a pressure filter after the pump (2), a return filter on the line back to the tank (3) and an offline filter with its own pump (4) (schematic, not to scale)

Reading the Rating on an Element

These are terms you may find on an existing element, its label or its data sheet. They are not a statement that every element we supply carries them: the quotation states the element we propose and its rating.

Reading the rating on an element
On the element or its data sheet	What it means
10 micron (10 µm), or a code in the part number	The particle size the rating refers to. The same figure can describe quite different elements, so compare the basis of the rating as well.
βx(c) ≥ 200, or ≥ 1000 (beta ratio)	A result of the maker’s multi-pass laboratory test, at the particle size x and the counter calibration stated: the count of particles of x µm(c) and larger before the element, divided by the count after it. 200 means 99.5 % of those particles are held, 1000 means 99.9 %. It compares elements under test conditions; it is not a promise of the same result in your system.
Absolute	Used by makers for a tested rating, usually a beta ratio; they define it differently, so read the figure behind the word.
Nominal	A looser rating without one agreed test; a nominal 10 micron element generally holds fewer fine particles than one rated βx(c) ≥ 200 at 10 µm(c).
Collapse or burst rating	The pressure difference the element is rated to withstand. In a housing without a bypass valve, it must suit the highest pressure difference the element can see.
Bypass setting	The pressure difference at which the bypass valve, in the housing or in the element, opens; the clogging indicator is usually set to warn before it.
NBR, FKM	The seal material, which must suit the fluid and its temperature.

In βx(c), x is the particle size in µm by the current counter calibration, from the multi-pass test that current data sheets cite. Older data sheets may give βx without the (c), from an older test, so the two figures are not directly comparable.

If the Part Number Is Gone

With the machine isolated, the pressure released and the housing cool and drained, take the old element out, let it drip and wipe it. Measure the length from end to end including any spigot, the outside diameter (OD), the inside diameter (ID) of the open end, and the O-ring’s inside diameter and thickness.

Photograph both end caps square on beside a ruler: a spigot, a thread, a valve or the shape of the seal decides the fit as much as the size. Send photos on WhatsApp to +91 99400 49505 or by email to [email protected].

With these, the fluid and the rating, we look for a matching element.

Drawing: measuring a filter element: its length from end to end and its outside diameter from the side, and the inside diameter and the O-ring at its open end (schematic, not to scale)

Before We Select a Replacement

An element that fits the housing can still be wrong for the system: a replacement, the original maker’s or an equivalent, has to match the rating and its basis, the collapse rating, the flow, the media and the seals, not only the size. What our quotation will confirm: the item we propose and its specification, what we matched it to, the quantity and availability.

Before we select a replacement
Detail	Why it matters
Part number and make of the old element	The quickest route to the exact element or a checked equivalent.
Where it fits: suction, pressure, return, offline or lube oil filter	Elements for each position are built differently, for flow, collapse rating and bypass.
Filtration rating and its basis	The micron size, and whether it is a beta ratio or a nominal rating.
Fluid and temperature	Media and seals must suit the oil and conditions.
Flow, and the bypass setting if it is marked	Affects element size and collapse rating.
Dimensions and end caps, if there is no part number	Measured as shown above, with photos of both ends.
Quantity and required date	Lets us confirm availability and lead time.

Example

From Our Invoices

In January 2026 we supplied replacement filter elements, ordered by the maker’s part number, to a plant in Nellore district, Andhra Pradesh. In October 2022 we supplied pressure line filter elements to a plant in Chittoor district, Andhra Pradesh.

Questions Buyers Ask

Can you supply an equivalent for my part number?

Often, yes. We check the equivalent against your application before offering it, and we tell you it is an equivalent.

Can you match an element from a photo?

Often, when the part number shows in the photo. Without it, photos of both end caps beside a ruler and the measurements described above let us look for a match, which we confirm with you before we quote. Send photos on WhatsApp to +91 99400 49505 or by email to [email protected].

Is a finer element always better?

Not on its own. A finer element holds smaller particles, but it may increase the pressure drop or shorten the element’s service life, unless its media area, construction and dirt-holding capacity make up for it. The rating is chosen for the most sensitive part of the system, and a change of rating is checked against the housing, the flow and the bypass setting.

Does your invoice show the HSN code?

Yes. Our GST invoice shows the HSN or SAC code for each line.

Do you keep stock?

Availability is confirmed with each quotation.

What is the price?

Prices depend on the element, quantity and delivery, so we quote for each enquiry.