Sta-Rite 27001-0054S Posi-Lok position lock ring for System 2 modular filtersSta-Rite Position Lock Ring, Modular Filter, 27001-0054S In stock$21899
Sta-Rite 27001-0054S Posi-Lok position lock ring for System 2 modular filters
Shop all Sta-Rite

Sta-Rite Position Lock Ring, Modular Filter, 27001-0054S

Ask a questionMPN 27001-0054S
$21899
FREE Delivery
In stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Posi-Lok ring The Sta-Rite locking ring that clamps the two tank halves together.
  • About 16 in. inside diameter Measured on the inside, the ring is approximately 16 in. across.
  • 3/4 in. inner lip The inner lip that grips the tank flange is approximately 3/4 in. thick.
  • System 2 modular media Fits the Sta-Rite System 2 modular media filters, models PLM100 and PLM150.
  • Genuine Sta-Rite Factory part 27001-0054S.
  • Replace it if it is cracked A split or distorted lock ring cannot hold the tank halves under pressure, and that is not a repair to improvise.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Sta-Rite Position Lock Ring, Modular Filter, 27001-0054S, SKU STA-051-2790. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Sta-Rite Position Lock Ring, Modular Filter, 27001-0054S
Sta-Rite

Position Lock Ring, Modular Filter, 27001-0054S

$21899
Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S
Pentair

Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S

$48299
Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037
Unicel Filter Cartridges

Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037

$24599
Pentair Genuine OEM Valve Body O-Ring for Cristal-Flo II and Sand Dollar Filters, 272541
Pentair

Genuine OEM Valve Body O-Ring for Cristal-Flo II and Sand Dollar Filters, 272541

$1199
Pentair Genuine OEM Triton II Air Relief Tee Assembly, 154689Z
Pentair

Genuine OEM Triton II Air Relief Tee Assembly, 154689Z

$3399
Pentair Genuine OEM Sand Filter Drain Cap, 154712
Pentair

Genuine OEM Sand Filter Drain Cap, 154712

$3699
Sta-Rite 21 in. Filter Tank O-Ring, System 3, 24850-0008Z
Sta-Rite

21 in. Filter Tank O-Ring, System 3, 24850-0008Z

$7099
Subtotal

Similar products

Other products people compare with this one.

Sta-Rite 27001-0020S System 2 black upper tank shell half Sta-Rite System 2 Tank Shell Upper Half, Black, 27001-0020S$29099 Sta-Rite 24850-0105 air relief valve and pressure gauge assembly for System 3 filters Sta-Rite Valve and Gauge Assembly for System 3 Filters, 24850-0105$11099 Sta-Rite 25021-0100Z System:3 elbow and bulkhead assembly Sta-Rite System:3 Elbow and Bulkhead Assembly, 25021-0100Z$11199 Sta-Rite 24850-0200 clamp assembly for System 3 pool filters Sta-Rite Clamp Assembly For System 3 Filters, 24850-0200$14699 Pentair Sta-Rite System 3 Replacement Element 136 Sq Ft Inner | 25021-0223S Pentair Sta-Rite System 3 Replacement Element 136 Sq Ft Inner | 25021-0223S$28199 Sta-Rite 24850-0009Z 25 in. filter tank O-ring for System 3 filters Sta-Rite 25 in. Filter Tank O-Ring, S8D110, 24850-0009Z$7699 Sta-Rite 27001-0060S tank o-ring for filters built before 2/97 Sta-Rite O-Ring for Tank Before 2/97, 27001-0060S$6299 Sta-Rite 25010-0200 air relief valve assembly for PLD and PTM filter systems Sta-Rite Air Relief Valve Assembly for PLD and PTM Filter Systems, 25010-0200$4499 Sta-Rite WC9-3 black tank o-ring for Posi-Flo II PTM cartridge filters Sta-Rite Black Tank O-Ring for Posi-Flo II PTM Cartridge Filters, WC9-3$4199 Sta-Rite 35505-1425 bulkhead assembly o-ring, 3-3/4 inch inside diameter Sta-Rite O-Ring 3-3/4" ID, for Bulkhead Assembly, 35505-1425$2999
Sta-Rite 25021-0003 air bleed tube for System 3 cartridge filters Sta-Rite System 3 Cartridge Filter Air Bleed Tube, 25021-0003$2599 Sta-Rite 35505-1424 adapter to tank O-ring, 2-3/8 inch inside diameter Sta-Rite O-Ring, 2-3/8" ID, Adapter to Tank, PLM/PLD, 35505-1424$1799 Sta-Rite 35505-1428 o-ring, 2-1/8 inch inside diameter Sta-Rite O-Ring 2-1/8" ID, 35505-1428$1699 Sta-Rite 27001-0022 drain plug assembly, 1-1/2 inch Sta-Rite Drain Plug Assembly 1-1/2", 27001-0022$1499 Sta-Rite U9-301 gray tank o-ring for Posi-Flo cartridge filters Sta-Rite Posi-Flo Tank O-Ring, Gray, U9-301$1399 Sta-Rite 35505-1429 O-ring for System 3 cartridge filters Sta-Rite O-Ring for System 3 Cartridge Filters, 35505-1429$1299 Sta-Rite U9-362 Buna-N union o-ring for 1-1/2 inch and 2 inch unions Sta-Rite Union O-Ring, 1-1/2 inch and 2 inch, U9-362$999 Sta-Rite 27001-0030S upper tank shell half with air relief valve for System 2 PLM300 Sta-Rite Tank Upper Half with Air Relief Valve for System 2 PLM300, 27001-0030S$47199 Sta-Rite 25021-0101 baffle and bulkhead fitting for System 3 cartridge filters Sta-Rite Baffle and Bulkhead Fitting for System 3 Cartridge Filters, 25021-0101$8299 Sta-Rite 24900-0503 drain plug for System 3 filters Sta-Rite Drain Plug for System 3 Models, 24900-0503$4199

Product details

The Sta-Rite 27001-0054S is the position lock ring, also called the Posi-Lok ring, for System 2 modular media filters. It is the genuine Sta-Rite part.

What it does

The filter tank is built as an upper and a lower half. The lock ring goes around the joint between them and holds the two together against the pressure inside. Everything the filter does depends on that ring staying intact.

Dimensions

The inside diameter is approximately 16 in. The inner lip, the part that grips the tank flange, is approximately 3/4 in. thick. Sta-Rite used more than one ring size across the modular filter range, so compare those measurements with your old ring before ordering.

When to replace it

Sun and years of clamping load make the plastic brittle. A ring that has cracked, split or lost its shape has to be replaced rather than coaxed back on, since it is the only thing keeping a pressurized tank closed.

Specifications
Brand Sta-Rite
Manufacturer part number 27001-0054S
UPC 022315309951
Type Position lock ring, Posi-Lok
Part type Pool filter part
Inside diameter Approximately 16 in.
Inner lip thickness Approximately 3/4 in.
Fits Sta-Rite System 2 modular media filters, models PLM100 and PLM150
Shipping weight 3.55 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

More from Sta-Rite

Pentair 170145 cartridge pack for Sta-Rite System 3 S7M120, inner and outer cartridges Sta-Rite 170145 System 3 S7M120 Large and Small Cartridge Set, 25021-0200S and 25022-0201S$48299 Pentair 461105Z MasterTemp and Max-E-Therm six button control board kit Pentair Genuine OEM MasterTemp/Max-E-Therm 6-Button Control Board Kit, 461105Z$53999 Pentair 272568Z six position top mount clamp valve top assembly Pentair 6-Position Top Mount Clamp Valve Top Assembly, 272568Z$15199 Filbur FS-3037 full 11 grid set for the Sta-Rite System 3 S7D75 DE filter Filbur Sta-Rite S7D75 Full Filter Grid Set (11 Grids), FS-3037$24599 Sta-Rite 08428-0125 SwimQuip white inlet face plate and eyeball kit with screws Sta-Rite Face Plate Inlet Eyeball Kit with Screws, 08428-0125$3299 Sta-Rite 17307-0110S pump tank body assembly for IntelliPro and Max-E-Pro pumps Sta-Rite Pump Tank Body Housing Assembly, IntelliPro, 17307-0110S$31099 Sta-Rite 27002-0300S 300 square foot MOD media replacement filter module for the PLM300 Sta-Rite 300 Sq. Ft. Filter Replacement MOD Media, 27002-0300S$57199 Pentair 170147 large and small cartridge filter pack for the Sta-Rite System:3 S8M150 Pentair Sta-Rite S8M150 Large and Small Cartridge Filter Pack 25021-0202S & 25022-0203S, 170147$77199 Sta-Rite 27001-0020S System 2 black upper tank shell half Sta-Rite System 2 Tank Shell Upper Half, Black, 27001-0020S$29099 Sta-Rite 77707-0054 Max-E-Therm igniter with gasket kit Sta-Rite Max-E-Therm Igniter with Gasket Kit, 77707-0054$9399
Sta-Rite 178745Z 12.5 in. Posi-Clear RP replacement filter lid, top view Sta-Rite 150/200 Sq Ft Posi-Clear RP Replacement Lid, 12.5 in., 178745Z$15099 Sta-Rite C176-59PZ tank body assembly for Max-E-Glas II and Dura-Glas II pumps Sta-Rite Tank Body Assembly for Max-E-Glas II and Dura-Glas II, C176-59PZ$29699 Pentair 474957 combustion chamber assembly for Sta-Rite Max-E-Therm heaters Pentair Combustion Chamber Assembly for Max-E-Therm Heaters, 474957$37399 Pentair Sta-Rite 474061 cupro nickel tube sheet coil assembly kit for MasterTemp 400NA and 400LP Sta-Rite Tube Sheet Coil Assembly Kit for Model 400NA, 400LP MasterTemp Heater, 474061$1,25399 Sta-Rite C103-194PZ Max-E-Pro pump seal plate, front view Sta-Rite Max-E-Pro Seal Plate, C103-194PZ$7299 Sta-Rite 24850-0105 air relief valve and pressure gauge assembly for System 3 filters Sta-Rite Valve and Gauge Assembly for System 3 Filters, 24850-0105$11099 Pentair 08650-0022 hinged weir door assembly for Sta-Rite and SwimQuip U-3 skimmers Pentair Weir Assembly for Sta-Rite U-3 Skimmer, 08650-0022$3899 Pentair 154712 sand filter drain cap Pentair Genuine OEM Sand Filter Drain Cap, 154712$3699 Pentair 356893Z IntelliPro VSF drive kit with keypad, black Pentair IntelliPro VSF Drive Kit with Keypad, Black, 356893Z$1,22699 Sta-Rite 42001-0061S air flow switch for Max-E-Therm SR200, SR333 and SR400 heaters Sta-Rite Max-E-Therm Air Flow Switch, 42001-0061S$15799

Questions and answers

What people ask about this product, answered by our pool techs.

What size is this ring?
The inside diameter is approximately 16 in. and the inner lip is approximately 3/4 in. thick. Measure your old ring against those figures before ordering.
Which filters use it?
The Sta-Rite System 2 modular media filters, models PLM100 and PLM150.
What does the lock ring do?
It clamps the upper and lower tank halves together so the filter can hold pressure. Sta-Rite calls it the Posi-Lok ring.
Can I keep using a cracked one?
No. The ring is the only thing holding a pressurized tank closed. A cracked, split or distorted ring should be replaced before the filter is put back into service.
Ask your own question